US11856670B2 - Systems and methods for providing power supply to current controllers associated with LED lighting - Google Patents
Systems and methods for providing power supply to current controllers associated with LED lighting Download PDFInfo
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- US11856670B2 US11856670B2 US18/081,528 US202218081528A US11856670B2 US 11856670 B2 US11856670 B2 US 11856670B2 US 202218081528 A US202218081528 A US 202218081528A US 11856670 B2 US11856670 B2 US 11856670B2
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- 238000010586 diagram Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 16
- 238000012986 modification Methods 0.000 description 12
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/34—Voltage stabilisation; Maintaining constant voltage
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/40—Details of LED load circuits
- H05B45/44—Details of LED load circuits with an active control inside an LED matrix
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
- H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/31—Phase-control circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/395—Linear regulators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Definitions
- Certain embodiments of the present invention are directed to circuits. More particularly, some embodiments of the invention provide systems and methods for providing power supply to current controllers. Merely by way of example, some embodiments of the invention have been applied to light emitting diodes (LEDs). But it would be recognized that the invention has a much broader range of applicability.
- LEDs light emitting diodes
- the light-emitting diodes are often regulated by a linear constant current circuit of a constant current controller chip.
- the constant current controller chip usually receives, as an input voltage, a rectified voltage (e.g., VIN) that is generated by a rectifier.
- VIN rectified voltage
- the rectified voltage e.g., VIN
- the input voltage of the constant current controller chip often falls below a threshold voltage, causing the controller chip not to operate normally.
- Triode for Alternating Current (TRIAC) dimmers have been widely used in conventional lighting systems such as incandescent lighting systems, the TRIAC dimmers are also increasingly being used in LED lighting systems.
- a TRIAC dimmer clips part of a waveform for the AC input voltage during a dimming off period.
- the rectified voltage e.g., VIN
- the bleeder unit that generates a bleeder current for the TRIAC dimmer, such that the input voltage of the constant current controller chip usually falls below the threshold voltage, causing the controller chip not to operate normally.
- the conventional technology often employs an external capacitor, which is used as a power supply to the constant current controller chip when the input voltage falls below the threshold voltage.
- the external capacitor usually increases the cost of bill of materials (BOM) for the LED lighting system.
- Certain embodiments of the present invention are directed to circuits. More particularly, some embodiments of the invention provide systems and methods for providing power supply to current controllers. Merely by way of example, some embodiments of the invention have been applied to light emitting diodes (LEDs). But it would be recognized that the invention has a much broader range of applicability.
- LEDs light emitting diodes
- a system for controlling one or more light emitting diodes includes: a power supply controller configured to receive a cathode voltage from a cathode of a diode, the diode including an anode configured to receive a rectified voltage generated by a rectifying bridge, the power supply controller being further configured to generate a first signal based at least in part on the cathode voltage; and a driver configured to receive the first signal and generate a second signal based at least in part on the first signal, the driver being further configured to output the second signal to a gate terminal of a transistor, the transistor including a source terminal coupled to the driver and a first resistor, the transistor further including a drain terminal coupled to the one or more light emitting diodes and an output capacitor connected to the cathode of the diode; wherein the power supply controller and the driver are further configured to: if the cathode voltage has not remained higher than a predetermined voltage threshold for a time duration that is equal to or longer than a predetermined
- a method for controlling one or more light emitting diodes comprising: receiving a cathode voltage from a cathode of a diode, the diode including an anode configured to receive a rectified voltage generated by a rectifying bridge; generating a first signal based at least in part on the cathode voltage; receiving the first signal; generating a second signal based at least in part on the first signal; and outputting the second signal to a gate terminal of a transistor, the transistor including a source terminal coupled to a first resistor, the transistor further including a drain terminal coupled to the one or more light emitting diodes and an output capacitor connected to the cathode of the diode; wherein the generating a first signal based at least in part on the cathode voltage includes: if the cathode voltage has not remained higher than a predetermined voltage threshold for a time duration that is equal to or longer than a predetermined time threshold, generating the first signal at a first
- FIG. 1 is a circuit diagram showing an LED lighting system according to some embodiments of the present invention.
- FIG. 2 is a circuit diagram showing certain components of the power supply controller as part of the LED lighting system as shown in FIG. 1 according to certain embodiments of the present invention.
- FIG. 3 is a circuit diagram showing an LED lighting system according to certain embodiments of the present invention.
- FIG. 4 shows simplified timing diagrams for the LED lighting system as shown in FIG. 1 and FIG. 2 according to some embodiments.
- FIG. 5 is a diagram showing a method for the LED lighting system as shown in FIG. 1 and/or the LED lighting system as shown in FIG. 3 according to some embodiments of the present invention.
- Certain embodiments of the present invention are directed to circuits. More particularly, some embodiments of the invention provide systems and methods for providing power supply to current controllers. Merely by way of example, some embodiments of the invention have been applied to light emitting diodes (LEDs). But it would be recognized that the invention has a much broader range of applicability.
- LEDs light emitting diodes
- FIG. 1 is a circuit diagram showing an LED lighting system according to some embodiments of the present invention.
- the LED lighting system 100 includes a current controller 110 (e.g., a controller chip), an LED load 120 (e.g., one or more light emitting diodes), a diode 140 (e.g., D 1 ), an output capacitor 150 (e.g., Cout), a transistor 160 (e.g., M 1 ), and a resistor 170 (e.g., R 1 ), and a rectifier 130 (e.g., a bridge rectifier circuit).
- a current controller 110 e.g., a controller chip
- an LED load 120 e.g., one or more light emitting diodes
- a diode 140 e.g., D 1
- an output capacitor 150 e.g., Cout
- a transistor 160 e.g., M 1
- a resistor 170 e.g., R 1
- a rectifier 130 e.
- the transistor 160 (e.g., M 1 ) is a power transistor.
- the above has been shown using a selected group of components for the LED lighting system, there can be many alternatives, modifications, and variations. For example, some of the components may be expanded and/or combined. Other components may be inserted to those noted above. Depending upon the embodiment, the arrangement of components may be interchanged with others replaced. Further details of these components are found throughout the present specification.
- the current controller 110 (e.g., a controller chip) includes a power supply controller 112 and a driver 114 .
- the current controller 110 (e.g., a controller chip) also includes terminals 180 , 182 , 184 , and 186 (e.g., pins 180 , 182 , 184 , and 186 ).
- the power supply controller 112 provides power supply to other components of the current controller 110 , such as providing the power supply to the driver 114 .
- the power supply controller 112 includes terminals 111 and 113 .
- the driver 114 includes terminals 115 , 117 , and 119 .
- the power supply controller 112 receives a voltage 190 at the terminal 111 through the terminal 180 (e.g., the HV terminal).
- the terminal 180 is connected to a cathode 142 of the diode 140 and a terminal 152 of the output capacitor 150 .
- the diode 140 also includes an anode 144 , which receives a voltage 192 (e.g., a rectified voltage VIN).
- the rectifier 130 (e.g., a bridge rectifier circuit) of the LED lighting system 100 receives an AC input voltage (e.g., VAC), generates the voltage 192 (e.g., a rectified voltage VIN), and outputs the voltage 192 (e.g., a rectified voltage VIN) to the anode 144 of the diode 140 .
- the rectifier 130 includes a full-wave rectifier circuit.
- the rectifier 130 includes an half-wave rectifier circuit.
- the terminal 113 of the power supply controller 112 is connected to the terminal 115 of the driver 114 .
- the power supply controller 112 outputs a signal 116 at the terminal 113 , and the signal 116 is received by the driver 114 at the terminal 115 .
- the signal 116 is a logic signal.
- the terminal 117 of the driver 114 is connected to a gate terminal of the transistor 160 .
- the output capacitor 150 also includes a terminal 154 .
- the terminal 154 is connected to a drain terminal of the transistor 160 .
- the transistor 160 includes the gate terminal, the drain terminal, and also a source terminal.
- the source terminal of the transistor 160 is connected to a terminal 172 of the resistor 170 , which also includes a terminal 174 .
- the terminal 174 is connected to the ground to receive the ground voltage.
- the LED load 120 (e.g., one or more light emitting diodes) includes terminals 122 and 124 .
- the terminal 122 is connected to the terminal 152 of the output capacitor 150
- the terminal 124 is connected to the terminal 154 of the output capacitor 150 .
- a voltage drop 156 represents the voltage drop between the terminal 152 of the output capacitor 150 and the terminal 154 of the output capacitor 150 .
- the LED load 120 includes multiple light emitting diodes connected in parallel and/or multiple light emitting diodes connected in series.
- the LED load 120 includes one or more in-line light emitting diodes.
- the LED load 120 includes one or more surface mounted light emitting diodes.
- the terminal 172 of the resistor 170 is connected to the source terminal of the transistor 160 and is also connected to the terminal 119 of the driver 114 through the terminal 184 (e.g., CS) of the current controller 110 .
- the resistor 170 generates a feedback voltage 173 at the terminal 172 , and the feedback voltage 173 is also received by the terminal 119 of the driver 114 to form a negative feedback loop.
- the driver 114 generates a gate voltage 162 based on the feedback voltage 173 , and outputs the gate voltage 162 to the gate terminal of the transistor 160 in order to control a current 194 that flows through the LED load 120 .
- the driver 114 performs liner constant current control and keeps the current 194 at a constant magnitude.
- the voltage 190 changes from zero to a peak value, and the peak value is equal to ⁇ square root over (2) ⁇ multiplied by the root-mean-squared (RMS) value of an AC input voltage (e.g., VAC).
- the root-mean-squared (RMS) value of the AC input voltage e.g., VAC
- the root-mean-squared (RMS) value of the AC input voltage e.g., VAC
- the root-mean-squared (RMS) value of the AC input voltage is equal to 220 volts.
- the voltage 192 (e.g., the rectified voltage VIN) is used to provide power to the current controller 110 (e.g., a controller chip), and the power supply controller 112 of the current controller 110 (e.g., a controller chip) is used to control the transistor 160 to keep the transistor 160 closed (e.g., turned on) during an initial stage according to certain embodiments.
- the initial stage lasts longer than at least one cycle of the voltage 192 (e.g., the rectified voltage VIN).
- one cycle of the voltage 192 (e.g., the rectified voltage VIN) is equal to half a cycle of the AC input voltage (e.g., VAC).
- the transistor 160 remains closed (e.g., turned on) in order to charge the output capacitor 150 .
- the transistor 160 remains turned on in the linear region during the initial stage.
- the transistor 160 remains turned on in the saturation region during the initial stage.
- the current controller 110 e.g., a controller chip
- the current controller 110 is used to control a current 164 that flows through the transistor 160 when the transistor 160 is turned on in order to control a charging current of the output capacitor 150 during the initial stage.
- the initial stage of the LED lighting system 100 ends and the normal operation stage of the LED lighting system 100 starts when the output capacitor 150 is sufficiently charged so that the voltage drop 156 of the output capacitor 150 can ensure the current controller 110 (e.g., a controller chip) to operate normally without interruption during the normal operation stage.
- the current controller 110 e.g., a controller chip
- the current controller 110 operates normally without interruption while being powered by the voltage 192 (e.g., a rectified voltage VIN) and/or the voltage drop 156 of the output capacitor 150 during the normal operation stage.
- the diode 140 is forward biased and the voltage 192 (e.g., a rectified voltage VIN) provides power to the current controller 110 (e.g., a controller chip).
- the voltage 192 e.g., a rectified voltage VIN
- the diode 140 is reverse biased and the voltage drop 156 of the output capacitor 150 provides power to the current controller 110 (e.g., a controller chip).
- the LED lighting system 100 operates in two stages including the initial stage and the normal operation stage.
- the transistor 160 remains turned on.
- the current controller 110 e.g., a controller chip
- the voltage 192 e.g., a rectified voltage VIN
- the initial stage of the LED lighting system 100 ends and the normal operation stage of the LED lighting system 100 starts when the voltage drop 156 of the output capacitor 150 becomes able to ensure the current controller 110 (e.g., a controller chip) to operate normally without interruption during the normal operation stage.
- the current controller 110 e.g., a controller chip
- the diode 140 is forward biased and the voltage 192 (e.g., a rectified voltage VIN) provides power to the current controller 110 (e.g., a controller chip), and if the voltage 192 (e.g., a rectified voltage VIN) is smaller than the voltage 190 , the diode 140 is reverse biased and the voltage drop 156 of the output capacitor 150 provides power to the current controller 110 (e.g., a controller chip).
- the LED lighting system 100 also includes a rectifier (e.g., a bridge rectifier circuit) that generates the voltage 192 (e.g., a rectified voltage VIN).
- a rectifier e.g., a bridge rectifier circuit
- the rectifier of the LED lighting system 100 receives an AC input voltage (e.g., VAC) and generates the voltage 192 (e.g., a rectified voltage VIN).
- the rectifier of the LED lighting system 100 includes a full-wave rectifier circuit and/or an half-wave rectifier circuit.
- the resistor 170 e.g., R 1
- the resistor 170 includes multiple resistors in series and/or multiple resistors in parallel.
- FIG. 2 is a circuit diagram showing certain components of the power supply controller 112 as part of the LED lighting system 100 as shown in FIG. 1 according to certain embodiments of the present invention.
- the power supply controller 112 includes a voltage generator 210 , an initial stage controller 220 , a voltage detector 230 , and a timer 240 .
- the above has been shown using a selected group of components for the LED lighting system, there can be many alternatives, modifications, and variations. For example, some of the components may be expanded and/or combined. Other components may be inserted to those noted above. Depending upon the embodiment, the arrangement of components may be interchanged with others replaced. Further details of these components are found throughout the present specification.
- the voltage generator 210 and the initial stage controller 220 are configured to keep the transistor 160 (e.g., M 1 ) closed (e.g., turned off) during the initial stage.
- the voltage detector 230 and the timer 240 are configured to determine whether the voltage drop 156 of the terminal 152 of the output capacitor 150 becomes able to ensure the current controller 110 (e.g., a controller chip) to operate normally without interruption, so that the LED lighting system 100 changes from the initial stage to the normal operation stage.
- the voltage generator 210 receives the voltage 190 and generates a voltage 212 (e.g., VDD).
- the voltage 212 e.g., VDD
- the initial stage controller 220 e.g., an operation controller
- the initial stage controller 220 e.g., an operation controller
- the initial stage controller 220 also receives a signal 242 and generates the signal 116 (e.g., MOS_ini).
- the signal 116 e.g., MOS_ini
- the signal 116 is a logic signal.
- the signal 116 (e.g., MOS_ini) is received by the driver 114 .
- the power supply controller 112 generates the signal 116 (e.g., MOS_ini) and outputs the signal 116 (e.g., MOS_ini) to the driver 114 .
- the driver 114 generates the gate voltage 162 based at least in part on the signal 116 (e.g., MOS_ini).
- the gate voltage 162 is received by the gate terminal of the transistor 160 .
- the transistor 160 is an NMOS transistor, and if the gate voltage 162 is at a high voltage level, the transistor 160 is turned on to form a conducting path to the ground for charging the output capacitor 150 .
- the voltage detector 230 receives the voltage 190 , detects the received voltage 190 , determines whether the detected voltage 190 is larger than an operation voltage threshold of the current controller 110 (e.g., a controller chip), and generates a signal 232 (e.g., UVLO_off).
- the operation voltage threshold e.g., the voltage threshold 432 as shown in FIG. 4
- the current controller 110 e.g., a controller chip
- the minimum power supply e.g., the minimum voltage
- the current controller 110 cannot operate normally.
- the voltage detector 230 if the detected voltage 190 is larger than the operation voltage threshold of the current controller 110 (e.g., a controller chip), the voltage detector 230 generates the signal 232 (e.g., UVLO_off) at a logic high level.
- the voltage detector 230 if the detected voltage 190 is not larger than the operation voltage threshold of the current controller 110 (e.g., a controller chip), the voltage detector 230 generates the signal 232 (e.g., UVLO_off) at a logic low level.
- the signal 232 (e.g., UVLO_off) is received by the timer 240 , which is configured to generate the signal 242 based at least in part on the signal 232 (e.g., UVLO_off). For example, if the signal 232 (e.g., UVLO_off) changes from the logic low level to the logic high level, the timer 240 starts counting. As an example, if the signal 232 (e.g., UVLO_off) changes from the logic high level to the logic low level, the timer 240 is rest to zero.
- the timer 240 starts counting the time duration during which the signal 232 (e.g., UVLO_off) remains at the logic high level. For example, if the counted time duration becomes larger than a predetermined time threshold (e.g., the threshold duration T th as shown in FIG. 4 ), the timer 240 changes the signal 242 from the logic low level to the logic high level.
- a predetermined time threshold e.g., the threshold duration T th as shown in FIG. 4
- the predetermined time threshold is larger than zero.
- the predetermined time threshold is longer than at least one cycle of the voltage 192 (e.g., the rectified voltage VIN) in duration.
- the timer 240 measures the counted time duration by the number of cycles of the voltage 192 (e.g., the rectified voltage VIN).
- the timer 240 measures the counted time duration by an internal clock of the time 240 .
- the initial stage controller 220 receives the signal 242 and generates the signal 116 (e.g., MOS_ini) based at least in part on the signal 242 . For example, if the signal 242 changes from the logic low level to the logic high level, the initial stage controller 220 ends the initial stage of the LED lighting system 100 and starts the normal operation stage of the LED lighting system 100 . As an example, during the normal operation stage of the LED lighting system 100 , the driver 114 generates the gate voltage 162 based at least in part on the feedback voltage 173 to regulate the current 194 (e.g., to keep the current 194 at a predetermined magnitude).
- the driver 114 generates the gate voltage 162 based at least in part on the feedback voltage 173 to regulate the current 194 (e.g., to keep the current 194 at a predetermined magnitude).
- the voltage generator 210 includes a junction field-effect transistor (JFET) and/or a low dropout regulator (LDO).
- the transistor 160 e.g., M 1
- the transistor 160 includes a metal oxide semiconductor (e.g., MOS) transistor and/or a bipolar junction transistor.
- MOS metal oxide semiconductor
- the driver 114 does not change the gate voltage 162 so that the transistor 160 (e.g., M 1 ) remains turned on.
- the transistor 160 is an NMOS transistor, and if the signal 116 (e.g., MOS_ini) is at the logic high level, the driver 114 keeps the gate voltage 162 at the logic high level so that the transistor 160 (e.g., M 1 ) remains turned on. In some examples, if the signal 116 (e.g., MOS_ini) is at the logic low level, the driver 114 changes the gate voltage 162 so that the transistor 160 (e.g., M 1 ) changes between being turned on and being turned off in order to regulate the current 194 (e.g., to keep the current 194 at a predetermined magnitude) based at least in part on the feedback voltage 173 .
- the signal 116 e.g., MOS_ini
- MOS_ini the driver 114 changes the gate voltage 162 so that the transistor 160 (e.g., M 1 ) changes between being turned on and being turned off in order to regulate the current 194 (e.g., to keep the current 194 at
- the LED lighting system 100 also includes a rectifier (e.g., a bridge rectifier circuit) that generates the voltage 192 (e.g., a rectified voltage VIN).
- a rectifier e.g., a bridge rectifier circuit
- the rectifier of the LED lighting system 100 receives an AC input voltage (e.g., VAC) and generates the voltage 192 (e.g., a rectified voltage VIN).
- the rectifier of the LED lighting system 100 includes a full-wave rectifier circuit and/or an half-wave rectifier circuit.
- the LED lighting system 100 also includes a dummy resistor
- FIG. 3 is a circuit diagram showing an LED lighting system according to certain embodiments of the present invention. This diagram is merely an example, which should not unduly limit the scope of the claims. One of ordinary skill in the art would recognize many variations, alternatives, and modifications. As shown in FIG.
- the LED lighting system 300 includes a current controller 310 (e.g., a controller chip), an LED load 320 (e.g., one or more light emitting diodes), a diode 340 (e.g., D 1 ), an output capacitor 350 (e.g., Cout), a transistor 360 (e.g., M 1 ), a resistor 370 (e.g., R 1 ), a resistor 332 (e.g., Rdummy), and a rectifier 330 (e.g., a bridge rectifier circuit).
- the transistor 360 e.g., M 1
- the transistor 360 is a power transistor.
- the current controller 310 (e.g., a controller chip) includes a power supply controller 312 and a driver 314 .
- the current controller 310 (e.g., a controller chip) also includes terminals 380 , 382 , 384 , and 386 (e.g., pins 380 , 382 , 384 , and 386 ).
- the power supply controller 312 provides power supply to other components of the current controller 310 , such as providing the power supply to the driver 314 .
- the power supply controller 312 includes terminals 311 and 313 .
- the driver 314 includes terminals 315 , 317 , and 319 .
- the power supply controller 312 receives a voltage 390 at the terminal 311 through the terminal 380 (e.g., the HV terminal).
- the terminal 380 is connected to a cathode 342 of the diode 340 and a terminal 352 of the output capacitor 350 .
- the diode 340 also includes an anode 344 , which receives a voltage 392 (e.g., a rectified voltage VIN).
- the rectifier 330 (e.g., a bridge rectifier circuit) of the LED lighting system 300 receives an AC input voltage (e.g., VAC), generates the voltage 392 (e.g., a rectified voltage VIN), and outputs the voltage 392 (e.g., a rectified voltage VIN) to the anode 344 of the diode 340 .
- the rectifier 330 includes a full-wave rectifier circuit.
- the rectifier 330 includes an half-wave rectifier circuit.
- the terminal 313 of the power supply controller 312 is connected to the terminal 315 of the driver 314 .
- the power supply controller 312 outputs a signal 316 at the terminal 313 , and the signal 316 is received by the driver 314 at the terminal 315 .
- the signal 316 is a logic signal.
- the terminal 317 of the driver 314 is connected to a gate terminal of the transistor 360 .
- the output capacitor 350 also includes a terminal 354 .
- the terminal 354 is connected to a drain terminal of the transistor 360 .
- the resistor 332 e.g., Rdummy
- the resistor 332 includes terminals 334 and 336 .
- the terminal 334 of the resistor 332 is connected to the terminal 352 of the output capacitor 350 .
- the terminal 336 of the resistor 332 is connected to the terminal 354 of the output capacitor 350 .
- the transistor 360 includes the gate terminal, the drain terminal, and also a source terminal.
- the source terminal of the transistor 360 is connected to a terminal 372 of the resistor 370 , which also includes a terminal 374 .
- the terminal 374 is connected to the ground to receive the ground voltage.
- the LED load 320 (e.g., one or more light emitting diodes) includes terminals 322 and 324 .
- the terminal 322 is connected to the terminal 352 of the output capacitor 350
- the terminal 324 is connected to the terminal 354 of the output capacitor 350 .
- the terminal 352 of the output capacitor 350 is at a voltage 356 .
- the LED load 320 includes multiple light emitting diodes connected in parallel and/or multiple light emitting diodes connected in series.
- the LED load 320 includes one or more in-line light emitting diodes.
- the LED load 320 includes one or more surface mounted light emitting diodes.
- the terminal 372 of the resistor 370 is connected to the source terminal of the transistor 360 and is also connected to the terminal 319 of the driver 314 through the terminal 384 (e.g., CS) of the current controller 310 .
- the resistor 370 generates a feedback voltage 373 at the terminal 372 , and the feedback voltage 373 is received by the terminal 319 of the driver 314 to form a negative feedback loop.
- the driver 314 during normal operation of the LED lighting system 300 , the driver 314 generates a gate voltage 362 based on the feedback voltage 373 , and outputs the gate voltage 362 to the gate terminal of the transistor 360 in order to control a current 396 that flows through the transistor 360 , and the current 396 is approximately equal to the current 394 that flows through the LED load 320 .
- the driver 314 performs liner constant current control and keeps the current 394 at a constant magnitude.
- the voltage 390 changes from zero to a peak value, and the peak value is equal to ⁇ square root over (2) ⁇ multiplied by the root-mean-squared (RMS) value of an AC input voltage (e.g., VAC).
- RMS root-mean-squared
- the root-mean-squared (RMS) value of the AC input voltage (e.g., VAC) is equal to 110 volts.
- the root-mean-squared (RMS) value of the AC input voltage (e.g., VAC) is equal to 220 volts.
- the voltage 392 (e.g., the rectified voltage VIN) is used to provide power to the current controller 310 (e.g., a controller chip), and the power supply controller 312 of the current controller 310 (e.g., a controller chip) is used to control the transistor 360 to keep the transistor 360 closed (e.g., turned on) during an initial stage according to certain embodiments.
- the initial stage lasts longer than at least one cycle of the voltage 392 (e.g., the rectified voltage VIN).
- one cycle of the voltage 392 (e.g., the rectified voltage VIN) is equal to half a cycle of the AC input voltage (e.g., VAC).
- the transistor 360 remains closed (e.g., turned on) in order to charge the output capacitor 350 .
- the transistor 360 remains turned on in the linear region during the initial stage.
- the transistor 160 remains turned on in the saturation region during the initial stage.
- the current controller 310 e.g., a controller chip
- the current controller 310 is used to control a current 364 that flows through the transistor 360 when the transistor 360 is turned on in order to control a charging current of the output capacitor 350 during the initial stage.
- the initial stage of the LED lighting system 300 ends and the normal operation stage of the LED lighting system 300 starts when the output capacitor 350 is sufficiently charged so that the voltage 356 of the output capacitor 350 can ensure the current controller 310 (e.g., a controller chip) to operate normally without interruption during the normal operation stage.
- the current controller 310 e.g., a controller chip
- the current controller 310 operates normally without interruption while being powered by the voltage 392 (e.g., a rectified voltage VIN) and/or the voltage 356 of the output capacitor 350 during the normal operation stage.
- the diode 340 is forward biased and the voltage 392 (e.g., a rectified voltage VIN) provides power to the current controller 310 (e.g., a controller chip).
- the voltage 392 e.g., a rectified voltage VIN
- the diode 340 is reverse biased and the voltage 356 of the output capacitor 350 provides power to the current controller 310 (e.g., a controller chip).
- the LED lighting system 300 operates in two stages including the initial stage and the normal operation stage.
- the transistor 360 remains turned on.
- the current controller 310 e.g., a controller chip
- the voltage 392 e.g., a rectified voltage VIN
- the initial stage of the LED lighting system 300 ends and the normal operation stage of the LED lighting system 300 starts when the voltage 356 of the output capacitor 350 becomes able to ensure the current controller 310 (e.g., a controller chip) to operate normally without interruption during normal operation stage.
- the current controller 310 e.g., a controller chip
- the current controller 310 operates normally without interruption while being powered by the voltage 392 (e.g., a rectified voltage VIN) and/or the voltage 356 of the output capacitor 350 .
- the diode 340 is forward biased and the voltage 392 (e.g., a rectified voltage VIN) provides power to the current controller 310 (e.g., a controller chip), and if the voltage 392 (e.g., a rectified voltage VIN) is smaller than the voltage 356 of the output capacitor 350 , the diode 340 is reverse biased and the voltage 356 of the output capacitor 350 provides power to the current controller 310 (e.g., a controller chip).
- the voltage 392 e.g., a rectified voltage VIN
- the diode 340 is reverse biased and the voltage 356 of the output capacitor 350 provides power to the current controller 310 (e.g., a controller chip).
- the current controller 310 (e.g., a controller chip) is the same as the current controller 110 (e.g., a controller chip), the LED load 320 (e.g., one or more light emitting diodes) is the same as the LED load 120 (e.g., one or more light emitting diodes), the diode 340 (e.g., D 1 ) is the same as the diode 140 (e.g., D 1 ), the output capacitor 350 (e.g., Cout) is the same as the output capacitor 150 (e.g., Cout), the transistor 360 (e.g., M 1 ) is the same as the transistor 160 (e.g., M 1 ), and the resistor 370 (e.g., R 1 ) is the same as the resistor 170 (e.g., R 1 ).
- the LED load 320 e.g., one or more light emitting diodes
- the diode 340 e.g., D 1
- the output capacitor 350
- the power supply controller 312 is the same as the power supply controller 112 , and the driver 314 is the same as the driver 114 .
- the power supply controller 312 includes the voltage generator 210 , the initial stage controller 220 , the voltage detector 230 , and the timer 240 .
- the resistor 370 (e.g., R 1 ) includes multiple resistors in series and/or multiple resistors in parallel.
- FIG. 4 shows simplified timing diagrams for the LED lighting system 100 as shown in FIG. 1 and FIG. 2 according to some embodiments. These diagrams are merely examples, which should not unduly limit the scope of the claims. One of ordinary skill in the art would recognize many variations, alternatives, and modifications. As shown in FIG.
- the waveform 410 represents the voltage 192 (e.g., the rectified voltage VIN) as a function of time
- the waveform 420 represents the voltage drop 156 of the output capacitor 150 as a function of time
- the waveform 430 represents the voltage 190 as a function of time
- the waveform 440 represents the voltage 212 (e.g., VDD) as a function of time
- the waveform 450 represents the signal 232 (e.g., UVLO_off) as a function of time
- the waveform 460 represents the signal 242 as a function of time
- the waveform 470 represents the signal 116 (e.g., MOS_ini) as a function of time.
- the voltage 192 (e.g., the rectified voltage VIN) changes as a function of time according to certain embodiments.
- cycle A, cycle B, cycle C, cycle D, and cycle E each represents one cycle of the voltage 192 (e.g., the rectified voltage VIN).
- one cycle of the voltage 192 (e.g., the rectified voltage VIN) is equal to half a cycle of the AC input voltage (e.g., VAC).
- the voltage drop 156 of the output capacitor 150 changes as a function of time according to some embodiments.
- the voltage drop 156 increases in magnitude when the output capacitor 150 is being charged during the initial stage of the LED lighting system 100 .
- the voltage 192 e.g., a rectified voltage VIN
- the diode 140 is forward biased and the voltage 192 (e.g., a rectified voltage VIN) is used to charge the output capacitor 150 to increase the voltage drop 156 .
- the diode 140 is reverse biased and the voltage 192 (e.g., a rectified voltage VIN) is not used to charge the output capacitor 150 so the voltage drop 156 remains unchanged.
- the voltage 190 changes as a function of time according to certain embodiments. For example, the voltage 190 falls below a voltage threshold 432 (e.g., the operation voltage threshold) at time t 1 , remains below the voltage threshold 432 (e.g., the operation voltage threshold) from time t 1 to time t 2 , and rises above the voltage threshold 432 (e.g., the operation voltage threshold) at time t 2 .
- a voltage threshold 432 e.g., the operation voltage threshold
- the voltage threshold 432 e.g., the operation voltage threshold
- the voltage 190 falls below the voltage threshold 432 (e.g., the operation voltage threshold) at time t 3 , remains below the voltage threshold 432 (e.g., the operation voltage threshold) from time t 3 to time t 4 , and rises above the voltage threshold 432 (e.g., the operation voltage threshold) at time t 4 .
- the voltage 190 falls below the voltage threshold 432 (e.g., the operation voltage threshold) at time t 5 , remains below the voltage threshold 432 (e.g., the operation voltage threshold) from time t 5 to time t 6 , and rises above the voltage threshold 432 (e.g., the operation voltage threshold) at time t 6 .
- the voltage threshold 432 (e.g., the operation voltage threshold of the current controller 110 ) represents the minimum power supply (e.g., the minimum voltage) that the current controller 110 needs in order to operate normally. For example, if the voltage 190 is higher than the voltage threshold 432 (e.g., the operation voltage threshold), the current controller 110 can operate normally. As an example, if the voltage 190 is lower than the voltage threshold 432 (e.g., the operation voltage threshold), the current controller 110 cannot operate normally.
- the voltage 212 changes as a function of time according to some embodiments.
- the voltage 212 e.g., VDD
- the voltage 212 is at a high voltage level 442 if the voltage 190 is higher than the voltage threshold 432 (e.g., the operation voltage threshold)
- the voltage 212 e.g., VDD
- the voltage level 444 changes with time.
- the voltage 212 (e.g., VDD) changes from the high voltage level 442 to the low voltage level 444 at time t 1 , changes from the low voltage level 444 to the high voltage level 442 at time t 2 , changes from the high voltage level 442 to the low voltage level 444 at time t 3 , changes from the low voltage level 444 to the high voltage level 442 at time t 4 , changes from the high voltage level 442 to the low voltage level 444 at time t 5 , and changes from the low voltage level 444 to the high voltage level 442 at time t 6 .
- VDD voltage 212
- the signal 232 changes as a function of time according to some embodiments.
- the signal 232 e.g., UVLO_off
- the signal 232 is at a logic high level if the voltage 190 is higher than the voltage threshold 432 (e.g., the operation voltage threshold)
- the signal 232 e.g., UVLO_off
- the signal 232 is at a logic low level if the voltage 190 is higher than the voltage threshold 432 (e.g., the operation voltage threshold).
- the signal 232 (e.g., UVLO_off) changes from the logic high level to the logic low level at time t 1 , changes from the logic low level to the logic high level at time t 2 , changes from the logic high level to the logic low level at time t 3 , changes from the logic low level to the logic high level at time t 4 , changes from the logic high level to the logic low level at time t 5 , and changes from the logic low level to the logic high level at time t 6 .
- UVLO_off changes from the logic high level to the logic low level at time t 1 , changes from the logic low level to the logic high level at time t 2 , changes from the logic high level to the logic low level at time t 3 , changes from the logic low level to the logic high level at time t 4 , changes from the logic high level to the logic low level at time t 5 , and changes from the logic low level to the logic high level at time t 6 .
- the signal 242 changes as a function of time according to certain embodiments.
- the signal 232 e.g., UVLO_off
- the threshold duration T th is larger than zero.
- the threshold duration T th is longer than at least one cycle of the voltage 192 (e.g., the rectified voltage VIN) as shown by the waveform 410 .
- the signal 242 is at the logic low level from time t 1 to time t 2 in response to the signal 232 (e.g., UVLO_off) being at the logic low level from time t 1 to time t 2 .
- the signal 242 is at the logic low level from time t 2 to time t 3 in response to the signal 232 (e.g., UVLO_off) being at the logic high level from time t 2 to time t 3 but changing to the logic low level at time t 3 , wherein the time duration from time t 2 to time t 3 is shorter than the threshold duration T th (e.g., the predetermined time threshold).
- the signal 242 changes from the logic low level to the logic high level at time t 7 in response to the signal 232 (e.g., UVLO_off) remains at the logic high level from time t 6 to time t 7 , wherein the time duration from time t 6 to time t 7 is equal to the threshold duration T th (e.g., the predetermined time threshold).
- the signal 242 remains at the logic high level after time t 7 in response to the signal 232 (e.g., UVLO_off) remaining at the logic high level since time t 6 .
- the signal 242 changes from the logic high level to the logic low level.
- the signal 116 changes as a function of time according to some embodiments.
- the signal 116 e.g., MOS_ini
- the signal 116 is at the logic high level if the signal 242 is at the logic low level
- the signal 116 is at the logic low level if the signal 242 is at the logic high level.
- the signal 116 e.g., MOS_ini
- the signal 116 remains at the logic high level.
- the signal 116 changes from the logic high level to the logic low level.
- the signal 116 e.g., MOS_ini
- the signal 116 remains at the logic low level.
- the signal 242 is at the logic high level, the LED lighting system 100 is in the initial stage, and if the signal 242 is at the logic low level, the LED lighting system 100 is in the normal operation stage.
- the signal 242 remains at the logic high level and the LED lighting system 100 is in the initial stage.
- the signal 242 changes from the logic high level to the logic low level and the LED lighting system 100 changes from the initial stage to the normal operation stage.
- the signal 242 remains at the logic low level and the LED lighting system 100 is in the normal operation stage.
- the driver 114 during the initial stage of the LED lighting system 100 , the driver 114 generates the gate voltage 162 to keep the transistor 160 turned on in order to charge the output capacitor 150 . In some embodiments, during the normal operation stage of the LED lighting system 100 , the driver 114 generates the gate voltage 162 to change the transistor 160 between being turned on and being turned off based at least in part on the feedback voltage 173 in order to regulate the current 194 (e.g., to keep the current 194 at a predetermined magnitude).
- the voltage 190 remains higher than the voltage threshold 432 (e.g., the operation voltage threshold) as shown by the waveform 430
- the voltage 212 e.g., VDD
- the signal 232 e.g., UVLO_off
- the voltage 190 has remained higher than the voltage threshold 432 (e.g., the operation voltage threshold) for a time duration that is no less than the threshold duration T th (e.g., the predetermined time threshold).
- the signal 232 (e.g., UVLO_off) changes from the logic low level to the logic high level as shown by the waveform 460
- the signal 116 (e.g., MOS_ini) changes from the logic high level to the logic low level as shown by the waveform 470 .
- the threshold duration T th (e.g., the predetermined time threshold) is longer than at least one cycle of the voltage 192 (e.g., the rectified voltage VIN) as shown by the waveform 410 , so if the voltage 190 has remained higher than the voltage threshold 432 (e.g., the operation voltage threshold) for a time duration that is no less than the threshold duration T th (e.g., the predetermined time threshold), the voltage 190 remains higher than the voltage threshold 432 (e.g., the operation voltage threshold) when the voltage 192 (e.g., a rectified voltage VIN) is small (e.g., when the voltage 192 reaches the valley during the cycle of the voltage 192 ).
- the voltage threshold 432 e.g., the operation voltage threshold
- the voltage 192 e.g., a rectified voltage VIN
- the signal 116 (e.g., MOS_ini) remains at the logic high level (e.g., from time t 1 to time t 7 as shown by the waveform 470 ) according to some embodiments.
- the signal 116 (e.g., MOS_ini) at the logic high level is received by the driver 114 , which in response generates the gate voltage 162 to keep the transistor 160 turned on during the initial stage (e.g., to keep the transistor 160 turned on from time t 1 to time t 7 ) so that the output capacitor 150 can be charged when the diode 140 is forward biased (e.g., when the voltage 192 is larger than the voltage 190 ).
- the voltage drop 156 of the output capacitor 150 cannot ensure the voltage 190 remains higher than the voltage threshold 432 (e.g., the operation voltage threshold) when the voltage 192 (e.g., a rectified voltage VIN) is small (e.g., when the voltage 192 reaches the valley during one cycle of the voltage 192 ).
- the voltage threshold 432 e.g., the operation voltage threshold
- the voltage 192 e.g., a rectified voltage VIN
- the voltage 190 is lower than the voltage threshold 432 (e.g., the operation voltage threshold), and the voltage 212 (e.g., VDD) is at the low voltage level 444 as shown by the waveforms 430 and 440 .
- the voltage threshold 432 e.g., the operation voltage threshold
- the voltage 212 e.g., VDD
- FIG. 4 is merely an example, which should not unduly limit the scope of the claims.
- FIG. 4 shows simplified timing diagrams for the LED lighting system 300 as shown in FIG. 3 according to some embodiments.
- FIG. 5 is a diagram showing a method for the LED lighting system 100 as shown in FIG. 1 and/or the LED lighting system 300 as shown in FIG. 3 according to some embodiments of the present invention.
- the method 500 includes a process 510 for charging an output capacitor to increase a voltage drop of the output capacitor by keeping a transistor turned on, a process 520 for determining whether the voltage drop of the output capacitor is sufficient to support normal operation of a current controller, and a process 530 for using an input voltage and/or the voltage drop of the output capacitor as power supply to maintain normal operation of the current controller while allowing the transistor to be turned on and turned off.
- the output capacitor (e.g., the output capacitor 150 and/or the output capacitor 350 ) is charged to increase the voltage drop of the output capacitor (e.g., the voltage drop 156 of the output capacitor 150 and/or the voltage drop 356 of the output capacitor 350 ) by keeping the transistor (e.g., the transistor 160 and/or the transistor 360 ) turned on according to certain embodiments.
- the LED lighting system 100 and/or the LED lighting system 300 operates in the initial stage.
- the process 510 is performed at any time from time t 1 to time t 7 .
- the process 520 it is determined whether the voltage drop of the output capacitor (e.g., the voltage drop 156 and/or the voltage drop 356 ) is sufficient to support normal operation of the current controller (e.g., the current controller 110 and/or the current controller 310 ) according to some embodiments. In certain examples, at the process 520 , it is determined whether the LED lighting system 100 and/or the LED lighting system 300 needs to continue operating in the initial stage or needs to start operating in the normal operation stage. For example, if it is determined that the LED lighting system 100 and/or the LED lighting system 300 needs to continue operating in the initial stage, the process 510 is performed. As an example, if it is determined that the LED lighting system 100 and/or the LED lighting system 300 needs to start operating in the normal operation stage, the process 530 is performed.
- the process 530 is performed.
- the voltage drop of the output capacitor e.g., the voltage drop 156 and/or the voltage drop 356 . is determined to be sufficient to support normal operation of the current controller (e.g., the current controller 110 and/or the current controller 310 ).
- the voltage drop of the output capacitor e.g., the voltage drop 156 and/or the voltage drop 356 . is determined to be not sufficient to support normal operation of the current controller (e.g., the current controller 110 and/or the current controller 310 ).
- the process 510 is performed. In certain examples, if it is determined that the voltage drop of the output capacitor (e.g., the voltage drop 156 and/or the voltage drop 356 ) is not sufficient to support normal operation of the current controller (e.g., the current controller 110 and/or the current controller 310 ), the process 510 is performed. In certain examples, if it is determined that the voltage drop of the output capacitor (e.g., the voltage drop 156 and/or the voltage drop 356 ) is sufficient to support normal operation of the current controller (e.g., the current controller 110 and/or the current controller 310 ), the process 530 is performed.
- the input voltage e.g. the rectified voltage 192 and/or the rectified voltage 392
- the voltage drop of the output capacitor is used as power supply to maintain normal operation of the current controller (e.g., the current controller 110 and/or the current controller 310 ) while allowing the transistor (e.g., the transistor 160 and/or the transistor 360 ) to be turned on and turned off according to certain embodiments.
- the normal operation of the LED lighting system 100 and/or the LED lighting system 300 is performed.
- the driver 114 under the normal operation of the LED lighting system 100 , the driver 114 generates the gate voltage 162 to change the transistor 160 between being turned on and being turned off in order to regulate the current 194 (e.g., to keep the current 194 at a predetermined magnitude) based at least in part on the feedback voltage 173 .
- the driver 314 under the normal operation of the LED lighting system 300 , the driver 314 generates the gate voltage 362 to change the transistor 360 between being turned on and being turned off in order to regulate the current 394 (e.g., to keep the current 394 at a predetermined magnitude) based at least in part on the feedback voltage 373 .
- systems and methods provide power supply to a current controller associated with LED lighting, so that during normal operation of the current controller, if the input voltage (e.g., the rectified voltage) is not sufficiently large, the voltage drop of the output capacitor can be used to provide power supply to the current controller.
- the systems and methods for providing the power supply do not need to use an extra external capacitor, thus lowering costs related to bill of material (BOM).
- the systems and methods for providing the power supply can ensure the normal operation of the current controller without interruption even when the input voltage (e.g., the rectified voltage) falls below the operation voltage threshold of the current controller.
- systems and methods provide power supply to a current controller associated with LED lighting, so that during normal operation of the current controller, the input voltage (e.g., the rectified voltage) or the voltage drop of the output capacitor is used to provide power supply to the current controller.
- the input voltage e.g., the rectified voltage
- the voltage drop of the output capacitor is used to provide power supply to the current controller.
- a system for controlling one or more light emitting diodes includes: a power supply controller configured to receive a cathode voltage from a cathode of a diode, the diode including an anode configured to receive a rectified voltage generated by a rectifying bridge, the power supply controller being further configured to generate a first signal based at least in part on the cathode voltage; and a driver configured to receive the first signal and generate a second signal based at least in part on the first signal, the driver being further configured to output the second signal to a gate terminal of a transistor, the transistor including a source terminal coupled to the driver and a first resistor, the transistor further including a drain terminal coupled to the one or more light emitting diodes and an output capacitor connected to the cathode of the diode; wherein the power supply controller and the driver are further configured to: if the cathode voltage has not remained higher than a predetermined voltage threshold for a time duration that is equal to or longer than a predetermined
- the predetermined time threshold is longer than at least one cycle of the rectified voltage in duration.
- the power supply controller and the driver are further configured to, if the cathode voltage has not remained higher than the predetermined voltage threshold for the time duration that is equal to or longer than the predetermined time threshold, keep the transistor turned on to charge the output capacitor.
- the power supply controller includes: a voltage generator configured to receive the cathode voltage; an operation controller coupled to the voltage generator and configured to generate the first signal; a voltage detector configured to receive the cathode voltage, determine whether the cathode voltage is higher than the predetermined voltage threshold, and generate a third signal indicating whether the cathode voltage is higher than the predetermined voltage threshold; and a timer configured to receive the third signal and generate a timer signal, the timer signal indicating whether the cathode voltage has remained higher than the predetermined voltage threshold for the time duration that is equal to or longer than the predetermined time threshold.
- the operation controller is further configured to receive the timer signal and generate the first signal based at least in part on the timer signal. In some examples, the operation controller is further configured to: if the timer signal indicates that the cathode voltage has not remained higher than the predetermined voltage threshold for the time duration that is equal to or longer than the predetermined time threshold, generate the first signal at the first level to keep the transistor turned on; and if the timer signal indicates that the cathode voltage has remained higher than the predetermined voltage threshold for the time duration that is equal to or longer than the predetermined time threshold, generate the first signal at the second level to allow the transistor to be turned on and to be turned off.
- the driver is further configured to: if the first signal is at the first level, generate the second signal at a third level to turn on the transistor; and if the first signal is at the second level, change the second signal from the third level to a fourth level to turn off the transistor or from the fourth level to the third level to turn on the transistor.
- the transistor is an NMOS transistor; the third level corresponds to a high voltage level; and the fourth level corresponds to a low voltage level, the low voltage being lower than the high voltage level.
- the diver is further configured to: receive a feedback signal from the first resistor; and if the first signal is at the second level, change, based at least in part on the feedback signal, the second signal from the third level to the fourth level to turn off the transistor or from the fourth level to the third level to turn on the transistor.
- the diver is further configured to: if the first signal is at the second level, change the second signal, based at least in part on the feedback signal, from the third level to the fourth level to turn off the transistor or from the fourth level to the third level to turn on the transistor, to regulate at a predetermined current magnitude a current that flows through at least the one or more light emitting diodes.
- the voltage generator includes at least one selected from a group consisting of a junction field-effect transistor and a low dropout regulator.
- the first level corresponds to a logic high level; and the second level corresponds to a logic low level.
- a method for controlling one or more light emitting diodes comprising: receiving a cathode voltage from a cathode of a diode, the diode including an anode configured to receive a rectified voltage generated by a rectifying bridge; generating a first signal based at least in part on the cathode voltage; receiving the first signal; generating a second signal based at least in part on the first signal; and outputting the second signal to a gate terminal of a transistor, the transistor including a source terminal coupled to a first resistor, the transistor further including a drain terminal coupled to the one or more light emitting diodes and an output capacitor connected to the cathode of the diode; wherein the generating a first signal based at least in part on the cathode voltage includes: if the cathode voltage has not remained higher than a predetermined voltage threshold for a time duration that is equal to or longer than a predetermined time threshold, generating the first signal at a first
- the predetermined time threshold is longer than at least one cycle of the rectified voltage in duration.
- the outputting the second signal to a gate terminal of a transistor includes: if the cathode voltage has not remained higher than the predetermined voltage threshold for the time duration that is equal to or longer than the predetermined time threshold, keep the transistor turned on to charge the output capacitor.
- the generating a first signal based at least in part on the cathode voltage further includes: determining whether the cathode voltage is higher than the predetermined voltage threshold; generating a third signal indicating whether the cathode voltage is higher than the predetermined voltage threshold; receiving the third signal; and generating a timer signal indicating whether the cathode voltage has remained higher than the predetermined voltage threshold for the time duration that is equal to or longer than the predetermined time threshold.
- the generating a first signal based at least in part on the cathode voltage further includes: receiving the timer signal; and generating the first signal based at least in part on the timer signal.
- the generating the first signal based at least in part on the timer signal includes: if the timer signal indicates that the cathode voltage has not remained higher than the predetermined voltage threshold for the time duration that is equal to or longer than the predetermined time threshold, generating the first signal at the first level to keep the transistor turned on; and if the timer signal indicates that the cathode voltage has remained higher than the predetermined voltage threshold for the time duration that is equal to or longer than the predetermined time threshold, generating the first signal at the second level to allow the transistor to be turned on and to be turned off.
- the generating a second signal based at least in part on the first signal includes: if the first signal is at the first level, generating the second signal at a third level to turn on the transistor; and if the first signal is at the second level, changing the second signal from the third level to a fourth level to turn off the transistor or from the fourth level to the third level to turn on the transistor.
- the transistor is an NMOS transistor; the third level corresponds to a high voltage level; and the fourth level corresponds to a low voltage level, the low voltage being lower than the high voltage level.
- the generating a second signal based at least in part on the first signal further includes: receiving a feedback signal from the first resistor; and if the first signal is at the second level, changing, based at least in part on the feedback signal, the second signal from the third level to the fourth level to turn off the transistor or from the fourth level to the third level to turn on the transistor.
- the changing, based at least in part on the feedback signal, the second signal from the third level to the fourth level to turn off the transistor or from the fourth level to the third level to turn on the transistor if the first signal is at the second level includes: if the first signal is at the second level, changing the second signal, based at least in part on the feedback signal, from the third level to the fourth level to turn off the transistor or from the fourth level to the third level to turn on the transistor, to regulate at a predetermined current magnitude a current that flows through at least the one or more light emitting diodes.
- the first level corresponds to a logic high level
- the second level corresponds to a logic low level.
- some or all components of various embodiments of the present invention each are, individually and/or in combination with at least another component, implemented using one or more software components, one or more hardware components, and/or one or more combinations of software and hardware components.
- some or all components of various embodiments of the present invention each are, individually and/or in combination with at least another component, implemented in one or more circuits, such as one or more analog circuits and/or one or more digital circuits.
- various embodiments and/or examples of the present invention can be combined.
Abstract
Description
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US17/096,741 US11564299B2 (en) | 2019-12-19 | 2020-11-12 | Systems and methods for providing power supply to current controllers associated with LED lighting |
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CN103957634B (en) | 2014-04-25 | 2017-07-07 | 广州昂宝电子有限公司 | Illuminator and its control method |
US10736187B2 (en) * | 2016-02-03 | 2020-08-04 | Lutron Ketra, Llc | Illumination device and method for decoupling power delivered to an LED load from a phase-cut dimming angle |
CN107645804A (en) | 2017-07-10 | 2018-01-30 | 昂宝电子(上海)有限公司 | System for LED switch control |
CN108200685B (en) | 2017-12-28 | 2020-01-07 | 昂宝电子(上海)有限公司 | LED lighting system for silicon controlled switch control |
CN109922564B (en) | 2019-02-19 | 2023-08-29 | 昂宝电子(上海)有限公司 | Voltage conversion system and method for TRIAC drive |
CN110493913B (en) | 2019-08-06 | 2022-02-01 | 昂宝电子(上海)有限公司 | Control system and method for silicon controlled dimming LED lighting system |
CN110831295B (en) | 2019-11-20 | 2022-02-25 | 昂宝电子(上海)有限公司 | Dimming control method and system for dimmable LED lighting system |
CN110831289B (en) | 2019-12-19 | 2022-02-15 | 昂宝电子(上海)有限公司 | LED drive circuit, operation method thereof and power supply control module |
CN111031635B (en) | 2019-12-27 | 2021-11-30 | 昂宝电子(上海)有限公司 | Dimming system and method for LED lighting system |
CN111432528B (en) * | 2020-03-17 | 2022-10-14 | 上海芯飞半导体技术有限公司 | LED driving power supply and controller thereof |
CN111432526B (en) | 2020-04-13 | 2023-02-21 | 昂宝电子(上海)有限公司 | Control system and method for power factor optimization of LED lighting systems |
CN111956821B (en) * | 2020-07-15 | 2021-11-09 | 浙江阳光照明电器集团股份有限公司 | Ultraviolet germicidal lamp sterilization method and circuit |
Citations (302)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3803452A (en) | 1972-01-20 | 1974-04-09 | S Goldschmied | Lamp control circuit |
US3899713A (en) | 1972-01-06 | 1975-08-12 | Hall Barkan Instr Inc | Touch lamp, latching AC solid state touch switch usable with such lamp, and circuits for the same |
US4253045A (en) | 1979-02-12 | 1981-02-24 | Weber Harold J | Flickering flame effect electric light controller |
US5144205A (en) | 1989-05-18 | 1992-09-01 | Lutron Electronics Co., Inc. | Compact fluorescent lamp dimming system |
US5249298A (en) | 1988-12-09 | 1993-09-28 | Dallas Semiconductor Corporation | Battery-initiated touch-sensitive power-up |
US5504398A (en) | 1994-06-10 | 1996-04-02 | Beacon Light Products, Inc. | Dimming controller for a fluorescent lamp |
US5949197A (en) | 1997-06-30 | 1999-09-07 | Everbrite, Inc. | Apparatus and method for dimming a gas discharge lamp |
US6196208B1 (en) | 1998-10-30 | 2001-03-06 | Autotronic Controls Corporation | Digital ignition |
US6218788B1 (en) | 1999-08-20 | 2001-04-17 | General Electric Company | Floating IC driven dimming ballast |
US6229271B1 (en) | 2000-02-24 | 2001-05-08 | Osram Sylvania Inc. | Low distortion line dimmer and dimming ballast |
US6278245B1 (en) | 2000-03-30 | 2001-08-21 | Philips Electronics North America Corporation | Buck-boost function type electronic ballast with bus capacitor current sensing |
CN1448005A (en) | 2000-08-18 | 2003-10-08 | 因芬尼昂技术股份公司 | Circuit arrangement for generating switching signal for current controlled switched mode power supply |
US20060022648A1 (en) | 2004-08-02 | 2006-02-02 | Green Power Technologies Ltd. | Method and control circuitry for improved-performance switch-mode converters |
US7038399B2 (en) | 2001-03-13 | 2006-05-02 | Color Kinetics Incorporated | Methods and apparatus for providing power to lighting devices |
US20070182338A1 (en) | 2006-01-20 | 2007-08-09 | Exclara Inc. | Current regulator for modulating brightness levels of solid state lighting |
US20070182699A1 (en) | 2006-02-09 | 2007-08-09 | Samsung Electro-Mechanics Co., Ltd. | Field sequential color mode liquid crystal display |
CN101040570A (en) | 2004-08-16 | 2007-09-19 | 照明技术电子工业有限公司 | Controllable power supply circuit for an illumination system and methods of operation thereof |
US20070267978A1 (en) | 2006-05-22 | 2007-11-22 | Exclara Inc. | Digitally controlled current regulator for high power solid state lighting |
JP2008010152A (en) | 2006-06-27 | 2008-01-17 | Matsushita Electric Works Ltd | Discharge lamp lighting device having light control signal output function, and lighting control system |
US20080224633A1 (en) | 2007-03-12 | 2008-09-18 | Cirrus Logic, Inc. | Lighting System with Lighting Dimmer Output Mapping |
US20080224629A1 (en) | 2007-03-12 | 2008-09-18 | Melanson John L | Lighting system with power factor correction control data determined from a phase modulated signal |
WO2008112820A2 (en) | 2007-03-12 | 2008-09-18 | Cirrus Logic, Inc. | Power control system for current regulated light sources |
US20080278092A1 (en) | 2007-05-07 | 2008-11-13 | Philips Solid-State Lighting Solutions, Inc. | High power factor led-based lighting apparatus and methods |
US20090021469A1 (en) | 2007-07-20 | 2009-01-22 | Samsung Electronics Co., Ltd. | Backlight assembly, method for driving backlight assembly, and liquid crystal display having the same |
US20090085494A1 (en) | 2005-09-03 | 2009-04-02 | E-Light Limited | Improvement to lighting systems |
US20090251059A1 (en) | 2008-04-04 | 2009-10-08 | Lemnis Lighting Patent Holding B.V. | Dimmer triggering circuit, dimmer system and dimmable device |
US7649327B2 (en) | 2006-05-22 | 2010-01-19 | Permlight Products, Inc. | System and method for selectively dimming an LED |
CN101657057A (en) | 2009-08-21 | 2010-02-24 | 深圳市金流明光电技术有限公司 | LED power circuit |
US20100141153A1 (en) | 2006-03-28 | 2010-06-10 | Recker Michael V | Wireless lighting devices and applications |
US20100148691A1 (en) * | 2008-12-12 | 2010-06-17 | O2Micro, Inc. | Driving circuit with dimming controller for driving light sources |
US20100156319A1 (en) | 2008-08-29 | 2010-06-24 | John Laurence Melanson | LED Lighting System with Accurate Current Control |
US20100164406A1 (en) | 2008-07-25 | 2010-07-01 | Kost Michael A | Switching power converter control with triac-based leading edge dimmer compatibility |
US20100176733A1 (en) | 2009-01-14 | 2010-07-15 | Purespectrum, Inc. | Automated Dimming Methods and Systems For Lighting |
US7759881B1 (en) | 2008-03-31 | 2010-07-20 | Cirrus Logic, Inc. | LED lighting system with a multiple mode current control dimming strategy |
US20100207536A1 (en) | 2007-10-26 | 2010-08-19 | Lighting Science Group Corporation | High efficiency light source with integrated ballast |
US20100213859A1 (en) | 2006-01-20 | 2010-08-26 | Exclara Inc. | Adaptive Current Regulation for Solid State Lighting |
US20100219766A1 (en) | 2008-12-12 | 2010-09-02 | Ching-Chuan Kuo | Circuits and methods for driving light sources |
US20100231136A1 (en) | 2009-03-13 | 2010-09-16 | Led Specialists Inc. | Line voltage dimmable constant current led driver |
CN101868090A (en) | 2009-06-29 | 2010-10-20 | 潘忠浩 | Circuit for dimming or speed regulation control and control method |
US7825715B1 (en) | 2008-10-03 | 2010-11-02 | Marvell International Ltd. | Digitally tunable capacitor |
CN101896022A (en) | 2009-05-18 | 2010-11-24 | 海洋王照明科技股份有限公司 | LED dimming control circuit |
CN101917804A (en) | 2010-08-03 | 2010-12-15 | 东莞市石龙富华电子有限公司 | Large-power intelligent dimming multiple-output power supply for suppressing electric surge with field-effect transistor |
CN101938865A (en) | 2009-06-30 | 2011-01-05 | 飞宏科技股份有限公司 | Dimmable light-emitting diode device used for reducing output ripple current and driving circuit thereof |
US20110012530A1 (en) | 2009-07-14 | 2011-01-20 | Iwatt Inc. | Adaptive dimmer detection and control for led lamp |
US7880400B2 (en) | 2007-09-21 | 2011-02-01 | Exclara, Inc. | Digital driver apparatus, method and system for solid state lighting |
US20110037399A1 (en) | 2009-08-13 | 2011-02-17 | Novatek Microelectronics Corp. | Dimmer circuit of light emitting diode and isolated voltage generator and dimmer method thereof |
CN101998734A (en) | 2009-08-21 | 2011-03-30 | 东芝照明技术株式会社 | Lighting circuit and illumination device |
US20110074302A1 (en) | 2009-09-30 | 2011-03-31 | Draper William A | Phase Control Dimming Compatible Lighting Systems |
US20110080110A1 (en) | 2009-10-07 | 2011-04-07 | Lutron Electronics Co., Inc. | Load control device for a light-emitting diode light source |
CN102014540A (en) | 2010-03-04 | 2011-04-13 | 凹凸电子(武汉)有限公司 | Drive circuit and controller for controlling electric power of light source |
CN102014551A (en) | 2009-09-17 | 2011-04-13 | 凹凸电子(武汉)有限公司 | Circuit, method and system for driving a light source and controller |
US20110101867A1 (en) | 2009-11-03 | 2011-05-05 | Cal-Comp Electronics & Communications Company Limited | Lighting apparatus, driving circuit of light emitting diode and driving method thereof |
CN102056378A (en) | 2009-11-03 | 2011-05-11 | 英特赛尔美国股份有限公司 | Led driver with open loop dimming control |
US7944153B2 (en) | 2006-12-15 | 2011-05-17 | Intersil Americas Inc. | Constant current light emitting diode (LED) driver circuit and method |
US20110121754A1 (en) | 2006-01-20 | 2011-05-26 | Exclara Inc. | Adaptive Current Regulation for Solid State Lighting |
US20110121744A1 (en) | 2009-11-20 | 2011-05-26 | Lutron Electronics Co., Inc. | Controllable-load circuit for use with a load control device |
US20110140620A1 (en) | 2010-07-12 | 2011-06-16 | Lin Yung Lin | Circuits and methods for controlling dimming of a light source |
US20110140621A1 (en) | 2010-07-02 | 2011-06-16 | Yi Xinmin | Circuits and methods for controlling a light source |
US20110187283A1 (en) | 2010-01-31 | 2011-08-04 | Microsemi Corporation | Dimming input suitable for multiple dimming signal types |
US8018171B1 (en) | 2007-03-12 | 2011-09-13 | Cirrus Logic, Inc. | Multi-function duty cycle modifier |
US20110227490A1 (en) | 2010-03-19 | 2011-09-22 | Active-Semi, Inc. | AC LED lamp involving an LED string having separately shortable sections |
CN102209412A (en) | 2010-03-31 | 2011-10-05 | 光旴科技股份有限公司 | Control circuit of controlling the illumination brightness of bicycle according to bicycle speed |
US20110260619A1 (en) | 2010-03-29 | 2011-10-27 | Innosys, Inc. | LED Dimming Driver |
US20110285301A1 (en) | 2010-05-19 | 2011-11-24 | Naixing Kuang | Triac dimmer compatible switching mode power supply and method thereof |
TW201143501A (en) | 2010-02-05 | 2011-12-01 | Sharp Kk | LED drive circuit, dimming device, LED illumination fixture, LED illumination device, and LED illumination system |
US20110291583A1 (en) | 2010-06-01 | 2011-12-01 | Feng-Min Shen | Dimmer circuit applicable for led device and control method thereof |
JP2011249328A (en) | 2010-05-25 | 2011-12-08 | National Semiconductor Corp | Driving system with inductor pre-charging for led systems with pwm dimming control or other loads |
TW201146087A (en) | 2010-06-01 | 2011-12-16 | Jd Tek Jim Dandy Technology Corp | Dimmable circuit applicable for LED lighting device and control method thereof |
US20110309759A1 (en) | 2006-01-20 | 2011-12-22 | Exclara Inc. | Adaptive Current Regulation for Solid State Lighting |
CN102300375A (en) | 2011-09-21 | 2011-12-28 | 缪仙荣 | Light emitting diode (LED) dimming circuit applicable to silicon controlled rectifier dimmer |
TW201204168A (en) | 2010-03-18 | 2012-01-16 | Koninkl Philips Electronics Nv | Method and apparatus for increasing dimming range of solid state lighting fixtures |
US8098021B2 (en) | 2009-05-26 | 2012-01-17 | Cal-Comp Electronics & Communications Company Limited | Driving circuit of light emitting diode and lighting apparatus |
CN102347607A (en) | 2010-07-28 | 2012-02-08 | 半导体元件工业有限责任公司 | Adaptive current limiter and dimmer system including the same |
US20120032604A1 (en) | 2009-04-21 | 2012-02-09 | Koninklijke Philips Electronics N.V. | System for driving a lamp |
TW201208481A (en) | 2009-09-28 | 2012-02-16 | Koninkl Philips Electronics Nv | Method and apparatus providing deep dimming of solid state lighting systems |
TW201208463A (en) | 2010-08-10 | 2012-02-16 | O2Micro Inc | Circuits and methods for driving light sources, and controllers for controlling dimming of light source |
TW201208486A (en) | 2010-04-27 | 2012-02-16 | Koninkl Philips Electronics Nv | Method and apparatus for adjusting light output range of solid state lighting load based on maximum and minimum dimmer settings |
US8129976B2 (en) | 2007-08-09 | 2012-03-06 | Lutron Electronics Co., Inc. | Load control device having a gate current sensing circuit |
US20120056553A1 (en) | 2009-05-29 | 2012-03-08 | Nxp B.V. | Circuit for connecting a low current lighting circuit to a dimmer |
US8134302B2 (en) | 2009-09-14 | 2012-03-13 | System General Corporation | Offline LED driving circuits |
CN102387634A (en) | 2010-06-30 | 2012-03-21 | 电力集成公司 | Dimmer-disabled led driver |
US20120069616A1 (en) | 2010-09-17 | 2012-03-22 | Toshiba Lighting & Technology Corporation | Switching power supply device, and adjustable power supply system including the same |
TW201215228A (en) | 2010-09-16 | 2012-04-01 | Addtek Corp | Light-emitting driving circuit with function of dynamic loading and increasing power factor and related dynamic loading module |
US20120081009A1 (en) | 2009-06-04 | 2012-04-05 | Exclara Inc. | Apparatus, Method and System for Providing AC Line Power to Lighting Devices |
US20120081032A1 (en) | 2010-09-30 | 2012-04-05 | Taiwan Semiconductor Manufacturing Company, Ltd. | Mechanisms for anti-flickering |
US20120080944A1 (en) | 2006-03-28 | 2012-04-05 | Wireless Environment, Llc. | Grid Shifting System for a Lighting Circuit |
US20120081035A1 (en) | 2010-10-04 | 2012-04-05 | Mccune Jr Earl W | Power Conversion and Control Systems and Methods for Solid-State Lighting |
CN102474953A (en) | 2009-07-28 | 2012-05-23 | 首尔半导体股份有限公司 | Dimming device for a lighting apparatus |
CN102497706A (en) | 2011-12-15 | 2012-06-13 | 成都芯源系统有限公司 | LED driving device and driving method and controller |
US20120146526A1 (en) | 2009-08-21 | 2012-06-14 | John Lam | Electronic Ballast with High Power Factor |
CN202353859U (en) | 2011-10-24 | 2012-07-25 | 深圳华路仕科技有限公司 | Controllable silicon light regulation device and illuminating system |
CN102612194A (en) | 2011-01-19 | 2012-07-25 | 群燿科技股份有限公司 | Dimming circuit, control method, micro controller and phase angle detection method for micro controller |
US20120187857A1 (en) | 2011-01-06 | 2012-07-26 | Texas Instruments Deutschland Gmbh | Lighting system, electronic device for a lighting system and method for operating the electronic device |
TW201233021A (en) | 2011-01-26 | 2012-08-01 | Macroblock Inc | Adaptive bleeder circuit |
CN102668717A (en) | 2009-11-19 | 2012-09-12 | 皇家飞利浦电子股份有限公司 | Method and apparatus for detecting dimmer phase angle and selectively determining universal input voltage for solid state lighting fixtures |
CN102695330A (en) | 2011-03-22 | 2012-09-26 | 立锜科技股份有限公司 | Light emitting device power supply circuit, and light emitting device driver circuit and control method thereof |
US20120242237A1 (en) | 2011-03-23 | 2012-09-27 | Hangzhou Silergy Semiconductor Technology LTD | Scr dimming circuit and method |
US20120262093A1 (en) | 2011-04-15 | 2012-10-18 | Recker Michael V | Lighting device capable of maintaining light intensity in demand response applications |
US20120268031A1 (en) | 2011-04-22 | 2012-10-25 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control with capacitive loads |
US20120286679A1 (en) | 2011-05-10 | 2012-11-15 | Richtek Technology Corporation | Light emitting device current regulator circuit and control method thereof |
CN102791056A (en) | 2011-05-18 | 2012-11-21 | 马士科技有限公司 | Wireless illumination control system and remote controller and system manager thereof |
US20120299500A1 (en) | 2010-11-22 | 2012-11-29 | Innosys, Inc. | Dimmable Timer-Based LED Power Supply |
US20120299511A1 (en) | 2011-05-26 | 2012-11-29 | Charles J. Montante | Controlling the Light Output of One or More LEDs In Response to the Output of a Dimmer |
US20120319604A1 (en) | 2011-06-17 | 2012-12-20 | Intersil Americas Inc. | Cascade boost and inverting buck converter with independent control |
CN202632722U (en) | 2012-05-04 | 2012-12-26 | 福建捷联电子有限公司 | LED drive circuit |
CN102843836A (en) | 2012-08-28 | 2012-12-26 | 矽力杰半导体技术(杭州)有限公司 | Controlled-silicon adapting LED (light-emitting diode) driving circuit, method and switch power supply |
US20120326616A1 (en) | 2011-06-23 | 2012-12-27 | Rohm Co., Ltd. | Light emitter driving device and lighting appliance therewith |
US20130009561A1 (en) | 2011-05-10 | 2013-01-10 | Arkalumen Inc. | Circuits for sensing current levels within a lighting apparatus incorporating a voltage converter |
US20130020965A1 (en) | 2010-06-25 | 2013-01-24 | Power Integrations, Inc. | Power converter with compensation circuit for adjusting output current provided to a constant load |
US20130026942A1 (en) | 2011-07-26 | 2013-01-31 | ByteLight, Inc. | Device for dimming a beacon light source used in a light based positioning system |
US20130027528A1 (en) | 2011-07-26 | 2013-01-31 | ByteLight, Inc. | Method and system for video processing to determine digital pulse recognition tones |
US20130026945A1 (en) | 2011-07-26 | 2013-01-31 | ByteLight, Inc. | Method and system for modifying a beacon light source for use in a light based positioning system |
US20130034172A1 (en) | 2011-07-28 | 2013-02-07 | Pettler Peter R | Powerline Communicated Load Control |
US8373313B2 (en) | 2009-06-15 | 2013-02-12 | Homerun Holdings Corporation | Three-way switch for home automation apparatus and method |
US8378588B2 (en) | 2008-12-12 | 2013-02-19 | O2Micro Inc | Circuits and methods for driving light sources |
US8378583B2 (en) | 2007-06-22 | 2013-02-19 | Osram Gesellschaft Mit Beschraenkter Haftung | Feedforward control of semiconductor light sources |
US20130043726A1 (en) | 2011-08-19 | 2013-02-21 | Ravishanker Krishnamoorthy | Method and apparatus for triac applications |
TWI387396B (en) | 2009-11-10 | 2013-02-21 | Green Mark Technology Inc | Dimmable led lamp and dimmable led lighting apparatus |
CN102946674A (en) | 2012-11-20 | 2013-02-27 | 矽力杰半导体技术(杭州)有限公司 | Controllable silicon dimming circuit with nondestructive leakage circuit and method thereof |
US20130049631A1 (en) | 2011-08-23 | 2013-02-28 | Scott A. Riesebosch | Led lamp with variable dummy load |
US20130063047A1 (en) | 2011-03-15 | 2013-03-14 | Lutron Electronics Co., Inc. | Load Control Device for a Light-Emitting Diode Light Source |
CN103004290A (en) | 2010-07-13 | 2013-03-27 | 皇家飞利浦电子股份有限公司 | Bleeding circuit and related method for preventing improper dimmer operation |
TW201315118A (en) | 2011-09-28 | 2013-04-01 | Monolithic Power Systems Inc | Power converter and the method thereof |
CN103024994A (en) | 2012-11-12 | 2013-04-03 | 昂宝电子(上海)有限公司 | Dimming control system and method employing TRIAC dimmer |
CN103096606A (en) | 2011-11-07 | 2013-05-08 | Nxp股份有限公司 | Method of controlling a ballast, a ballast, a lighting controller, and a digital signal processor |
CN103108470A (en) | 2013-02-06 | 2013-05-15 | 深圳市芯飞凌半导体有限公司 | Dynamic linear control light emitting diode (LED) driver circuit |
US20130134904A1 (en) | 2011-11-24 | 2013-05-30 | Leadtrend Technology Corp. | Dimming driving system and dimming controller |
US20130141001A1 (en) | 2010-03-25 | 2013-06-06 | Koninklijke Philips Electronics, N.V. | Method and apparatus for increasing dimming range of solid state lighting fixtures |
US20130162158A1 (en) | 2010-08-31 | 2013-06-27 | Thomas Pollischansky | Circuit Assembly and Method for Operating at Least one LED |
US20130169177A1 (en) | 2011-12-30 | 2013-07-04 | Richtek Technology Corporation | Active Bleeder Circuit Triggering TRIAC in All Phase and Light Emitting Device Power Supply Circuit and TRIAC Control Method Using the Active Bleeder Circuit |
US20130175931A1 (en) | 2012-01-05 | 2013-07-11 | Laurence P. Sadwick | Triac Dimming Control System |
US20130181630A1 (en) | 2012-01-17 | 2013-07-18 | Mark S. Taipale | Digital load control system providing power and communication via existing power wiring |
US20130187568A1 (en) | 2012-01-25 | 2013-07-25 | Dialog Semiconductor Gmbh | Dimming Method and System for LED Lamp Assemblies |
US8497637B2 (en) | 2011-04-13 | 2013-07-30 | Gang Gary Liu | Constant voltage dimmable LED driver |
US20130193866A1 (en) | 2010-04-14 | 2013-08-01 | Koninklijke Philips Electronics, N.V. | Method and apparatus for detecting presence of dimmer and controlling power delivered to solid state lighting load |
US20130193879A1 (en) | 2010-05-10 | 2013-08-01 | Innosys, Inc. | Universal Dimmer |
US20130194848A1 (en) | 2012-01-31 | 2013-08-01 | Gabriele Bernardinis | Current-balancing in interleaved circuit phases |
CN103260302A (en) | 2013-01-14 | 2013-08-21 | 美芯晟科技(北京)有限公司 | LED driver with adjustable conduction time |
US20130215655A1 (en) | 2012-02-17 | 2013-08-22 | Seung-Uk YANG | Switch controller, switch control method, and power supply device comprising the switch controller |
US20130223107A1 (en) | 2008-10-21 | 2013-08-29 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for protecting power conversion systems based on at least feedback signals |
US20130229121A1 (en) | 2012-03-05 | 2013-09-05 | Toshiba Lighting & Technology Corporation | Power supply for illumination and luminaire |
US20130241427A1 (en) | 2012-03-13 | 2013-09-19 | Iwatt Inc. | Power dissipation monitor for current sink function of power switching transistor |
US20130242622A1 (en) | 2012-03-14 | 2013-09-19 | Marvell World Trade Ltd. | Method and apparatus for starting up |
US20130241441A1 (en) | 2012-03-13 | 2013-09-19 | Iwatt Inc. | Adaptive Compensation for Effects of Cat-Ear Dimmers on Conduction Angle Measurement |
US20130241428A1 (en) | 2010-09-27 | 2013-09-19 | Mitsubishi Chemical Corporation | Led illumination apparatus and led illumination system |
US20130249431A1 (en) | 2012-03-05 | 2013-09-26 | Luxera, Inc. | Dimmable Hybrid Adapter for a Solid State Lighting System, Apparatus and Method |
US8558477B2 (en) | 2010-04-30 | 2013-10-15 | Osram Gesellschaft Mit Beschraenkter Haftung | Method and device for obtaining conduction angle, method and device for driving LED |
TW201342987A (en) | 2012-04-03 | 2013-10-16 | Himax Analogic Inc | Illumination driver circuit |
CN103369802A (en) | 2013-08-02 | 2013-10-23 | 叶鸣 | Design method of LED (light-emitting diode) dimming driving switching power supply applied to various traditional dimmers |
US20130278159A1 (en) | 2012-04-18 | 2013-10-24 | Power Integrations, Inc. | Bleeder circuit for use in a power supply |
US20130307431A1 (en) | 2011-05-11 | 2013-11-21 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using system controllers |
US20130307430A1 (en) | 2012-05-18 | 2013-11-21 | Nxp B.V. | Control circuit for a phase-cut dimmer and a method of controlling a phase-cut dimmer |
US20130307434A1 (en) | 2012-05-21 | 2013-11-21 | Marvell World Trade Ltd. | Method and apparatus for controlling a lighting device |
CN103458579A (en) | 2013-08-29 | 2013-12-18 | 矽力杰半导体技术(杭州)有限公司 | Load driving circuit and method |
US20130342127A1 (en) | 2012-06-25 | 2013-12-26 | Richtek Technology Corporation | Led control device for phase-cut dimming system and control method thereof |
US20130343090A1 (en) | 2012-06-21 | 2013-12-26 | Fairchild Korea Semiconductor Ltd. | Active bleeder, active bleeding method, and power supply device where the active bleeder is applied |
US20140009082A1 (en) | 2012-07-03 | 2014-01-09 | Cirrus Logic, Inc. | Systems and methods for determining a type of transformer to which a load is coupled |
CN103547014A (en) | 2012-07-12 | 2014-01-29 | 全汉企业股份有限公司 | Load driving device associated with light-emitting diode lamp tube and method of load driving device |
US20140029315A1 (en) | 2012-07-24 | 2014-01-30 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for current control of power conversion systems |
US8644041B2 (en) | 2009-01-14 | 2014-02-04 | Nxp B.V. | PFC with high efficiency at low load |
US8653750B2 (en) | 2010-11-17 | 2014-02-18 | Nxp B.V. | Method of controlling an electronic ballast, an electronic ballast and a lighting controller |
US20140049177A1 (en) | 2012-08-17 | 2014-02-20 | Trw Automotive U.S. Llc | Method and Apparatus To Control Light Intensity As Voltage Fluctuates |
US20140063857A1 (en) | 2012-08-31 | 2014-03-06 | Marvell World Trade Ltd. | Method and apparatus for controlling a lighting device |
CN103648219A (en) | 2013-12-19 | 2014-03-19 | 上海莱托思电子科技有限公司 | Light-emitting diode (LED) switch constant-current driving circuit |
US20140078790A1 (en) | 2012-09-14 | 2014-03-20 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for voltage control and current control of power conversion systems with multiple operation modes |
US8686668B2 (en) | 2009-10-26 | 2014-04-01 | Koninklijke Philips N.V. | Current offset circuits for phase-cut power control |
TW201414146A (en) | 2012-09-21 | 2014-04-01 | Anwell Semiconductor Corp | Power conversion control chip and device thereof |
CN103716934A (en) | 2012-09-28 | 2014-04-09 | 凹凸电子(武汉)有限公司 | Driving circuit for driving light source, method and controller |
US8698419B2 (en) | 2010-03-04 | 2014-04-15 | O2Micro, Inc. | Circuits and methods for driving light sources |
US20140103829A1 (en) | 2012-01-13 | 2014-04-17 | Power Integrations, Inc. | Feed forward imbalance corrector circuit |
TWM477115U (en) | 2013-12-17 | 2014-04-21 | Unity Opto Technology Co Ltd | LED driver circuit providing TRIAC holding current using controlled current source |
TW201417631A (en) | 2012-10-31 | 2014-05-01 | Schneider Electric South East Asia Hq Pte Ltd | Power supply method for dimming system and dimming system |
CN103781229A (en) | 2012-10-25 | 2014-05-07 | 上海占空比电子科技有限公司 | Dimming circuit compatible with silicon controlled rectifier dimmer and control method |
TW201422045A (en) | 2012-11-16 | 2014-06-01 | Anwell Semiconductor Corp | High stability LED control circuit |
TWI441428B (en) | 2011-07-06 | 2014-06-11 | Macroblock Inc | Auto-selecting holding current circuit |
US20140160809A1 (en) | 2012-12-10 | 2014-06-12 | On-Bright Electronics (Shanghai)Co., Ltd. | Systems and methods for peak current adjustments in power conversion systems |
TW201424454A (en) | 2012-11-02 | 2014-06-16 | Rab Lighting Inc | Dimming for constant current LED driver circuit |
CN203675408U (en) | 2014-01-30 | 2014-06-25 | 杰华特微电子(杭州)有限公司 | Short-circuit protection circuit for LED lighting device |
US20140177280A1 (en) | 2012-12-21 | 2014-06-26 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for source switching and voltage generation |
US20140176016A1 (en) | 2012-12-17 | 2014-06-26 | Ecosense Lighting Inc. | Systems and methods for dimming of a light source |
US20140197760A1 (en) | 2011-09-06 | 2014-07-17 | Koninklijke Philips N.V. | Power control unit and method for controlling electrical power provided to a load, in particular an led unit, and voltage control unit for controlling an output voltage of a converter unit |
CN103945614A (en) | 2014-04-25 | 2014-07-23 | 昂宝电子(上海)有限公司 | Illumination system and drive circuit |
CN103957634A (en) | 2014-04-25 | 2014-07-30 | 广州昂宝电子有限公司 | Illuminating system and control method thereof |
US8829819B1 (en) | 2013-05-07 | 2014-09-09 | Power Integrations, Inc. | Enhanced active preload for high performance LED driver with extended dimming |
US20140265935A1 (en) | 2013-03-14 | 2014-09-18 | Laurence P. Sadwick | Digital Dimmable Driver |
US20140265898A1 (en) | 2013-03-15 | 2014-09-18 | Power Integrations, Inc. | Lossless preload for led driver with extended dimming |
US20140268935A1 (en) | 2013-03-18 | 2014-09-18 | Power Forest Technology Corporation | Ac/dc converting circuit and starting method thereof |
US20140265907A1 (en) | 2013-03-14 | 2014-09-18 | O2Micro, Inc. | Circuits and methods for driving light sources |
CN104066254A (en) | 2014-07-08 | 2014-09-24 | 昂宝电子(上海)有限公司 | System and method for achieving intelligent light modulation control through TRIAC light modulator |
US20140300274A1 (en) | 2011-12-16 | 2014-10-09 | Beniamin Acatrinei | Near unity power factor long life low cost led lamp retrofit system and method |
US20140320031A1 (en) | 2013-04-26 | 2014-10-30 | Unity Opto Technology Co., Ltd. | Variable power dimming control circuit |
US20140333228A1 (en) | 2013-05-07 | 2014-11-13 | Power Integrations, Inc. | Dimmer detector for bleeder circuit activation |
US8896288B2 (en) | 2011-02-17 | 2014-11-25 | Marvell World Trade Ltd. | TRIAC dimmer detection |
US20140354170A1 (en) | 2013-05-29 | 2014-12-04 | Lutron Electronics Co., Inc. | Load control device for a light-emitting diode light source |
US20140354157A1 (en) | 2013-05-31 | 2014-12-04 | Isine, Inc. | Current steering module for use with led strings |
US20140354165A1 (en) | 2012-02-02 | 2014-12-04 | Koninklijke Philips N.V. | Led light source |
US20150015159A1 (en) | 2013-07-15 | 2015-01-15 | Luxmill Electronic Co., Ltd. | Led driver capable of regulating power dissipation and led lighting apparatus using same |
US8941323B1 (en) | 2013-07-05 | 2015-01-27 | Unity Opto Technology Co., Ltd. | Ceiling lamp adopting non-separating driver circuit |
US8947010B2 (en) | 2009-10-14 | 2015-02-03 | Nationl Semiconductor Corporation | Dimmer decoder with low duty cycle handling for use with LED drivers |
US20150035450A1 (en) | 2013-08-01 | 2015-02-05 | Cambridge Semiconductor Limited | Solid state lighting control |
US20150048757A1 (en) | 2012-03-16 | 2015-02-19 | Koninklijke Philips N.V. | Circuit arrangement |
US20150062981A1 (en) | 2013-08-29 | 2015-03-05 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for adjusting frequencies and currents based on load conditions of power conversion systems |
US20150077009A1 (en) | 2012-05-28 | 2015-03-19 | Panasonic Intellectual Property Management Co., Ltd. | Light-emitting diode driving apparatus and semiconductor device |
US9030122B2 (en) | 2008-12-12 | 2015-05-12 | O2Micro, Inc. | Circuits and methods for driving LED light sources |
CN104619077A (en) | 2014-12-18 | 2015-05-13 | 无锡市芯茂微电子有限公司 | LED (Light Emitting Diode) constant current control circuit and control method thereof |
US20150137704A1 (en) | 2013-11-19 | 2015-05-21 | Power Integrations, Inc. | Bleeder circuit emulator for a power converter |
CN104768265A (en) | 2014-01-02 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | High-power LED constant-current driving circuit |
US9084316B2 (en) | 2010-11-04 | 2015-07-14 | Cirrus Logic, Inc. | Controlled power dissipation in a switch path in a lighting system |
US9131581B1 (en) | 2014-03-14 | 2015-09-08 | Lightel Technologies, Inc. | Solid-state lighting control with dimmability and color temperature tunability |
CN104902653A (en) | 2015-06-24 | 2015-09-09 | 赛尔富电子有限公司 | LED constant-voltage dimming power supply and LED lamp dimming system |
US9167638B2 (en) | 2012-08-14 | 2015-10-20 | Nxp B.V. | LED controller circuit |
US9173258B2 (en) | 2013-03-14 | 2015-10-27 | Cree, Inc. | Lighting apparatus including a current bleeder module for sinking current during dimming of the lighting apparatus and methods of operating the same |
EP2938164A2 (en) | 2014-04-24 | 2015-10-28 | Power Integrations, Inc. | Multi-bleeder mode control for improved led driver performance |
US20150312982A1 (en) | 2008-08-29 | 2015-10-29 | Cirrus Logic, Inc. | LED Lighting System with Accurate Current Control |
CN105072742A (en) | 2015-07-22 | 2015-11-18 | 佛山冠今光电科技有限公司 | High-voltage linear constant-current LED drive circuit |
US20150333764A1 (en) | 2014-05-13 | 2015-11-19 | Power Integrations, Inc. | Digital-to-analog converter circuit for use in a power converter |
US9207265B1 (en) | 2010-11-12 | 2015-12-08 | Cirrus Logic, Inc. | Dimmer detection |
US20150359054A1 (en) | 2014-06-05 | 2015-12-10 | Leadtrend Technology Corporation | Control methods and power converters suitable for triac dimming |
US20150357910A1 (en) | 2012-03-01 | 2015-12-10 | Panasonic Corp | Dc power supply circuit |
US20150366010A1 (en) | 2014-06-12 | 2015-12-17 | Power Integrations, Inc. | Line ripple compensation for shimmerless led driver |
US20150382424A1 (en) | 2014-06-25 | 2015-12-31 | Ketra, Inc. | Illumination Device and Method for Controlling an Illumination Device over Changes in Drive Current and Temperature |
CN105246218A (en) | 2015-11-09 | 2016-01-13 | 生迪智慧科技有限公司 | Dimming control circuit, dimming control method and lighting equipment |
TW201603644A (en) | 2014-07-08 | 2016-01-16 | On Bright Electronics Shanghai | Light modulation control system and method using TRIAC light modulator |
CN105265019A (en) | 2013-06-05 | 2016-01-20 | 皇家飞利浦有限公司 | Apparatus for controlling light module |
TW201607368A (en) | 2014-05-19 | 2016-02-16 | 微晶片科技公司 | Method and system for improving LED lifetime and color quality in dimming apparatus |
CN105423140A (en) | 2014-09-15 | 2016-03-23 | 戴乐格半导体公司 | Dynamic Bleeder Current Control for LED Dimmers |
US20160113077A1 (en) | 2014-10-10 | 2016-04-21 | Citizen Holdings Co., Ltd. | Led drive circuit |
US9332609B1 (en) | 2015-01-08 | 2016-05-03 | Illum Technology, Llc | Phase cut dimming LED driver |
US20160128142A1 (en) | 2013-05-17 | 2016-05-05 | Koninklijke Philips N.V. | Driver device and driving method for driving a load, in particular an led unit |
US20160134187A1 (en) | 2014-11-07 | 2016-05-12 | Power Integrations, Inc. | Power converter controller with analog controlled variable current circuit |
TWI540809B (en) | 2013-10-21 | 2016-07-01 | 矽力杰半導體技術(杭州)有限公司 | Overvoltage protection method and circuit for switching power supply output and switching power supply provided with the circuit |
TW201630468A (en) | 2015-02-12 | 2016-08-16 | Richtek Technology Corp | Linear LED driver and control method thereof |
CN105873269A (en) | 2016-03-31 | 2016-08-17 | 深圳市九洲光电科技有限公司 | Intelligent light emitting diode (LED) lamp, system and method compatible with silicon-controlled rectifier dimming |
US20160277411A1 (en) | 2015-03-19 | 2016-09-22 | Microsoft Technology Licensing, Llc. | Tenant lockbox |
US20160286617A1 (en) * | 2012-12-07 | 2016-09-29 | Panasonic Intellectual Property Management Co., Ltd. | Drive circuit, illumination source, and lighting device |
CN105992440A (en) | 2015-01-28 | 2016-10-05 | 立锜科技股份有限公司 | Control circuit and method of LED driver |
US9467137B2 (en) | 2013-11-18 | 2016-10-11 | Fairchild Korea Semiconductor Ltd. | Input current control method, switch control circuit and power supply including the switch control circuit |
TW201639415A (en) | 2015-04-30 | 2016-11-01 | 立錡科技股份有限公司 | Light emitting device driver circuit and control circuit and control method thereof |
US20160323957A1 (en) | 2015-05-01 | 2016-11-03 | Cree, Inc. | Controlling the drive signal in a lighting fixture based on ambient temperature |
CN106105395A (en) | 2014-03-18 | 2016-11-09 | 飞利浦照明控股有限公司 | Bleeder controls device |
CN106163009A (en) | 2016-08-18 | 2016-11-23 | 杰华特微电子(杭州)有限公司 | Illumination driving circuit and illuminator |
CN205812458U (en) | 2016-07-14 | 2016-12-14 | 深圳市明微电子股份有限公司 | A kind of LED linear constant-current drive circuit and LED light device |
US20170006684A1 (en) | 2015-07-02 | 2017-01-05 | Delta Electronics, Inc. | Led lighting module having tunable correlated color temperature and control method thereof |
CN106332374A (en) | 2016-10-26 | 2017-01-11 | 杰华特微电子(杭州)有限公司 | Bleeder circuit and method for controlling bleeder current and LED control circuit |
CN106332390A (en) | 2015-06-30 | 2017-01-11 | 华润矽威科技(上海)有限公司 | Non-isolated LED constant-current driver chip, circuit and method |
CN106358337A (en) | 2016-10-26 | 2017-01-25 | 杰华特微电子(杭州)有限公司 | Leakage circuit, leakage current control method and LED (Light Emitting Diode) control circuit |
US20170027029A1 (en) | 2011-03-17 | 2017-01-26 | Shanghai Sim-Bcd Semiconductor Manufacturing Co., Ltd. | Power supply for led lamp with triac dimmer |
US9572224B2 (en) | 2014-11-07 | 2017-02-14 | Power Integrations, Inc. | Bleeder protection using thermal foldback |
CN106413189A (en) | 2016-10-17 | 2017-02-15 | 广州昂宝电子有限公司 | Intelligent control system and method using modulated signal and associated with TRIAC light modulator |
US20170055323A1 (en) | 2015-08-21 | 2017-02-23 | Seoul Semiconductor Co., Ltd. | Driving circuit and lighting apparatus for light emitting diode |
CN206042434U (en) | 2016-08-18 | 2017-03-22 | 杰华特微电子(杭州)有限公司 | Lighting drive circuit and lighting system |
CN106604460A (en) | 2016-12-12 | 2017-04-26 | 深圳市必易微电子有限公司 | Constant current circuit, constant current controller and constant current control method |
US9655188B1 (en) | 2016-02-03 | 2017-05-16 | Ketra, Inc. | Illumination device and method for independently controlling power delivered to a load from dimmers having dissimilar phase-cut dimming angles |
US9661702B2 (en) | 2015-03-05 | 2017-05-23 | Microchip Technology Inc. | Constant-current controller with square-wave input current shaping |
CN106793246A (en) | 2016-11-16 | 2017-05-31 | 杰华特微电子(杭州)有限公司 | Leadage circuit and its control method and LED control circuit |
CN106888524A (en) | 2017-04-21 | 2017-06-23 | 矽力杰半导体技术(杭州)有限公司 | LED drive circuit, circuit module and control method with controllable silicon dimmer |
CN106912144A (en) | 2017-04-06 | 2017-06-30 | 矽力杰半导体技术(杭州)有限公司 | LED drive circuit, circuit module and control method with controllable silicon dimmer |
CN107046751A (en) | 2017-05-27 | 2017-08-15 | 深圳市明微电子股份有限公司 | A kind of linear constant current LED drive circuit, driving chip and drive device |
CN107069726A (en) | 2017-01-24 | 2017-08-18 | 国网山东省电力公司德州市陵城区供电公司 | A kind of electric power energy-saving control system |
US20170251532A1 (en) | 2014-09-15 | 2017-08-31 | Dialog Semiconductor Inc. | Multi-mode control for solid state lighting |
US9820344B1 (en) | 2015-02-09 | 2017-11-14 | Elias S Papanicolaou | Led thyristor switched constant current driver |
US20170354008A1 (en) | 2016-06-02 | 2017-12-07 | Fairchild Korea Semiconductor, Ltd. | Led driving device |
CN107645804A (en) | 2017-07-10 | 2018-01-30 | 昂宝电子(上海)有限公司 | System for LED switch control |
US20180035507A1 (en) | 2016-07-26 | 2018-02-01 | Panasonic Intellectual Property Management Co., Ltd. | Lighting device, and luminaire |
US20180115234A1 (en) | 2016-10-26 | 2018-04-26 | Joulwatt Technology (Hangzhou) Co., Ltd. | Bleeder circuit |
CN107995750A (en) | 2018-01-03 | 2018-05-04 | 矽力杰半导体技术(杭州)有限公司 | Circuit module, the LED drive circuit of tunable optical and control method |
CN107995747A (en) | 2017-12-28 | 2018-05-04 | 矽力杰半导体技术(杭州)有限公司 | Circuit module, Dimmable LED drive circuit and control method |
US20180139816A1 (en) | 2016-11-16 | 2018-05-17 | Joulwatt Technology (Hangzhou) Co., Ltd. | Bleeder circuit and control method thereof, and led control circuit |
CN207460551U (en) | 2017-11-03 | 2018-06-05 | 杰华特微电子(杭州)有限公司 | LED light adjusting circuits |
CN108337764A (en) | 2017-01-19 | 2018-07-27 | 鸿科电子实业有限公司 | Constant pressure exports AC phase Dimmable LED drivers |
CN108366460A (en) | 2018-04-11 | 2018-08-03 | 矽力杰半导体技术(杭州)有限公司 | Leadage circuit and LED drive circuit |
CN207744191U (en) | 2017-11-29 | 2018-08-17 | 深圳音浮光电股份有限公司 | LED light modulating devices |
US10054271B2 (en) | 2015-03-10 | 2018-08-21 | Jiaxing Super Lighting Electric Appliance Co., Ltd. | LED tube lamp |
US20180263089A1 (en) | 2017-03-09 | 2018-09-13 | Sean Paul Seyler | Lamp control |
CN207910676U (en) | 2017-12-30 | 2018-09-25 | 天津信天电子科技有限公司 | A kind of multichannel servo-driver with over-voltage over-current protection function |
CN108834259A (en) | 2018-07-11 | 2018-11-16 | 深圳市明微电子股份有限公司 | For the linearity constant current control circuit of LED light, method and LED matrix |
CN109246885A (en) | 2018-09-11 | 2019-01-18 | 莱昊(上海)光电科技有限公司 | A kind of phase-cut dimming device of LED |
CN208572500U (en) | 2018-07-11 | 2019-03-01 | 深圳市明微电子股份有限公司 | Linearity constant current control circuit and LED matrix for LED light |
US20190082507A1 (en) | 2017-09-14 | 2019-03-14 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for bleeder control related to lighting emitting diodes |
US20190104583A1 (en) | 2017-09-29 | 2019-04-04 | Panasonic Intellectual Property Management Co., Ltd. | Power supply system, lighting device, and illumination system |
CN109729621A (en) | 2019-03-04 | 2019-05-07 | 上海晶丰明源半导体股份有限公司 | Control circuit, method, chip and the drive system and method for leadage circuit |
US10299328B2 (en) | 2015-03-26 | 2019-05-21 | Signify Holding B.V. | LED driver circuit, lighting arrangement and driving method |
US20190166667A1 (en) | 2017-11-30 | 2019-05-30 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for stage-based control related to triac dimmers |
US10362643B2 (en) | 2016-07-07 | 2019-07-23 | Semiconductor Components Industries, Llc | LED driver circuit and LED driving method |
US20190230755A1 (en) | 2017-12-28 | 2019-07-25 | On-Bright Electronics (Shanghai) Co., Ltd. | Led lighting systems with triac dimmers and methods thereof |
CN110086362A (en) | 2019-05-29 | 2019-08-02 | 杭州涂鸦信息技术有限公司 | A kind of regulating device |
CN110099495A (en) | 2019-06-11 | 2019-08-06 | 安徽省东科半导体有限公司 | A kind of power frequency is without inductor constant-current control circuit and control method |
US10405392B1 (en) | 2018-04-16 | 2019-09-03 | Dialog Semiconductor Inc. | Dimmer multi-fire to increase direct AC LED device efficiency |
US10447171B2 (en) | 2009-11-25 | 2019-10-15 | Lutron Technology Company Llc | Load control device for high-efficiency loads |
US20190350055A1 (en) | 2018-05-08 | 2019-11-14 | Joulwatt Technology (Hangzhou) Co., Ltd. | Control circuit and control method for lighting circuit, and lighting circuit |
CN110493913A (en) | 2019-08-06 | 2019-11-22 | 昂宝电子(上海)有限公司 | The control system and method for LED illumination System for controllable silicon light modulation |
US20190364628A1 (en) | 2018-05-25 | 2019-11-28 | Silergy Semiconductor Technology (Hangzhou) Ltd | Led driver with silicon controlled dimmer, apparatus and control method thereof |
US10499467B2 (en) | 2017-12-18 | 2019-12-03 | Self Electronics Co., Ltd. | LED lamp with constant current dimming drive circuit based on PWM input |
US10531534B1 (en) * | 2019-01-29 | 2020-01-07 | Wuxi Org Microelectronics Co., Ltd. | Switched-mode control circuit for correlated color temperature based on linear drive LED lighting |
US10530268B2 (en) | 2009-11-25 | 2020-01-07 | Lutron Technology Company Llc | Load control device for high-efficiency loads |
US10568185B1 (en) | 2019-07-18 | 2020-02-18 | Leviton Manufacturing Company, Inc. | Two-wire dimmer operation |
US10616975B2 (en) | 2015-06-08 | 2020-04-07 | Panasonic Intellectual Property Management Co., Ltd. | Dimmer |
US20200267817A1 (en) | 2019-02-19 | 2020-08-20 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods with triac dimmers for voltage conversion related to light emitting diodes |
US20200375001A1 (en) | 2019-05-21 | 2020-11-26 | Seoul Semiconductor Co., Ltd. | Led lighting apparatus and led driving circuit thereof |
US20210153313A1 (en) | 2019-11-20 | 2021-05-20 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control related to triac dimmers associated with led lighting |
US20210195709A1 (en) | 2019-12-19 | 2021-06-24 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for providing power supply to current controllers associated with led lighting |
US20210204375A1 (en) | 2019-12-27 | 2021-07-01 | On-Bright Electronics (Shanghai) Co., Ltd | Systems and methods for controlling currents flowing through light emitting diodes |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TW535175B (en) | 2000-10-16 | 2003-06-01 | Primarion Inc | System and method for orthogonal inductance variation |
US7550199B2 (en) | 2006-07-31 | 2009-06-23 | E.I. Du Pont De Nemours And Company | Copolymers for stain resistance |
CN101631006A (en) | 2008-07-15 | 2010-01-20 | 株式会社日立制作所 | System and method for transmitting data |
-
2019
- 2019-12-19 CN CN201911316902.5A patent/CN110831289B/en active Active
-
2020
- 2020-03-31 TW TW109111042A patent/TWI738278B/en active
- 2020-11-12 US US17/096,741 patent/US11564299B2/en active Active
-
2022
- 2022-12-14 US US18/081,528 patent/US11856670B2/en active Active
Patent Citations (443)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3899713A (en) | 1972-01-06 | 1975-08-12 | Hall Barkan Instr Inc | Touch lamp, latching AC solid state touch switch usable with such lamp, and circuits for the same |
US3803452A (en) | 1972-01-20 | 1974-04-09 | S Goldschmied | Lamp control circuit |
US4253045A (en) | 1979-02-12 | 1981-02-24 | Weber Harold J | Flickering flame effect electric light controller |
US5249298A (en) | 1988-12-09 | 1993-09-28 | Dallas Semiconductor Corporation | Battery-initiated touch-sensitive power-up |
US5144205A (en) | 1989-05-18 | 1992-09-01 | Lutron Electronics Co., Inc. | Compact fluorescent lamp dimming system |
US5504398A (en) | 1994-06-10 | 1996-04-02 | Beacon Light Products, Inc. | Dimming controller for a fluorescent lamp |
US5949197A (en) | 1997-06-30 | 1999-09-07 | Everbrite, Inc. | Apparatus and method for dimming a gas discharge lamp |
US6196208B1 (en) | 1998-10-30 | 2001-03-06 | Autotronic Controls Corporation | Digital ignition |
US6218788B1 (en) | 1999-08-20 | 2001-04-17 | General Electric Company | Floating IC driven dimming ballast |
US6229271B1 (en) | 2000-02-24 | 2001-05-08 | Osram Sylvania Inc. | Low distortion line dimmer and dimming ballast |
US6278245B1 (en) | 2000-03-30 | 2001-08-21 | Philips Electronics North America Corporation | Buck-boost function type electronic ballast with bus capacitor current sensing |
CN1448005A (en) | 2000-08-18 | 2003-10-08 | 因芬尼昂技术股份公司 | Circuit arrangement for generating switching signal for current controlled switched mode power supply |
US7038399B2 (en) | 2001-03-13 | 2006-05-02 | Color Kinetics Incorporated | Methods and apparatus for providing power to lighting devices |
US20060022648A1 (en) | 2004-08-02 | 2006-02-02 | Green Power Technologies Ltd. | Method and control circuitry for improved-performance switch-mode converters |
CN101040570A (en) | 2004-08-16 | 2007-09-19 | 照明技术电子工业有限公司 | Controllable power supply circuit for an illumination system and methods of operation thereof |
US20090085494A1 (en) | 2005-09-03 | 2009-04-02 | E-Light Limited | Improvement to lighting systems |
US20070182338A1 (en) | 2006-01-20 | 2007-08-09 | Exclara Inc. | Current regulator for modulating brightness levels of solid state lighting |
US20110309759A1 (en) | 2006-01-20 | 2011-12-22 | Exclara Inc. | Adaptive Current Regulation for Solid State Lighting |
US8742674B2 (en) | 2006-01-20 | 2014-06-03 | Point Somee Limited Liability Company | Adaptive current regulation for solid state lighting |
US20100213859A1 (en) | 2006-01-20 | 2010-08-26 | Exclara Inc. | Adaptive Current Regulation for Solid State Lighting |
US20110121754A1 (en) | 2006-01-20 | 2011-05-26 | Exclara Inc. | Adaptive Current Regulation for Solid State Lighting |
US20070182699A1 (en) | 2006-02-09 | 2007-08-09 | Samsung Electro-Mechanics Co., Ltd. | Field sequential color mode liquid crystal display |
US20120080944A1 (en) | 2006-03-28 | 2012-04-05 | Wireless Environment, Llc. | Grid Shifting System for a Lighting Circuit |
US9247623B2 (en) | 2006-03-28 | 2016-01-26 | Wireless Environment, Llc | Switch sensing emergency lighting power supply |
US9247625B2 (en) | 2006-03-28 | 2016-01-26 | Wireless Environment, Llc | Detection and wireless control for auxiliary emergency lighting |
US20100141153A1 (en) | 2006-03-28 | 2010-06-10 | Recker Michael V | Wireless lighting devices and applications |
US7649327B2 (en) | 2006-05-22 | 2010-01-19 | Permlight Products, Inc. | System and method for selectively dimming an LED |
US20070267978A1 (en) | 2006-05-22 | 2007-11-22 | Exclara Inc. | Digitally controlled current regulator for high power solid state lighting |
JP2008010152A (en) | 2006-06-27 | 2008-01-17 | Matsushita Electric Works Ltd | Discharge lamp lighting device having light control signal output function, and lighting control system |
US7944153B2 (en) | 2006-12-15 | 2011-05-17 | Intersil Americas Inc. | Constant current light emitting diode (LED) driver circuit and method |
US8018171B1 (en) | 2007-03-12 | 2011-09-13 | Cirrus Logic, Inc. | Multi-function duty cycle modifier |
US20120181946A1 (en) | 2007-03-12 | 2012-07-19 | Melanson John L | Lighting System With Power Factor Correction Control Data Determined From A Phase Modulated Signal |
US20080224633A1 (en) | 2007-03-12 | 2008-09-18 | Cirrus Logic, Inc. | Lighting System with Lighting Dimmer Output Mapping |
US20080224629A1 (en) | 2007-03-12 | 2008-09-18 | Melanson John L | Lighting system with power factor correction control data determined from a phase modulated signal |
WO2008112820A2 (en) | 2007-03-12 | 2008-09-18 | Cirrus Logic, Inc. | Power control system for current regulated light sources |
US20080278092A1 (en) | 2007-05-07 | 2008-11-13 | Philips Solid-State Lighting Solutions, Inc. | High power factor led-based lighting apparatus and methods |
US8378583B2 (en) | 2007-06-22 | 2013-02-19 | Osram Gesellschaft Mit Beschraenkter Haftung | Feedforward control of semiconductor light sources |
US20090021469A1 (en) | 2007-07-20 | 2009-01-22 | Samsung Electronics Co., Ltd. | Backlight assembly, method for driving backlight assembly, and liquid crystal display having the same |
US8129976B2 (en) | 2007-08-09 | 2012-03-06 | Lutron Electronics Co., Inc. | Load control device having a gate current sensing circuit |
US7880400B2 (en) | 2007-09-21 | 2011-02-01 | Exclara, Inc. | Digital driver apparatus, method and system for solid state lighting |
US20100207536A1 (en) | 2007-10-26 | 2010-08-19 | Lighting Science Group Corporation | High efficiency light source with integrated ballast |
US7759881B1 (en) | 2008-03-31 | 2010-07-20 | Cirrus Logic, Inc. | LED lighting system with a multiple mode current control dimming strategy |
US20090251059A1 (en) | 2008-04-04 | 2009-10-08 | Lemnis Lighting Patent Holding B.V. | Dimmer triggering circuit, dimmer system and dimmable device |
US20120299501A1 (en) | 2008-07-25 | 2012-11-29 | Kost Michael A | Switching Power Converter Control With Triac-Based Leading Edge Dimmer Compatibility |
US20100164406A1 (en) | 2008-07-25 | 2010-07-01 | Kost Michael A | Switching power converter control with triac-based leading edge dimmer compatibility |
US20150312982A1 (en) | 2008-08-29 | 2015-10-29 | Cirrus Logic, Inc. | LED Lighting System with Accurate Current Control |
US20100156319A1 (en) | 2008-08-29 | 2010-06-24 | John Laurence Melanson | LED Lighting System with Accurate Current Control |
US7825715B1 (en) | 2008-10-03 | 2010-11-02 | Marvell International Ltd. | Digitally tunable capacitor |
US20130223107A1 (en) | 2008-10-21 | 2013-08-29 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for protecting power conversion systems based on at least feedback signals |
US8415901B2 (en) | 2008-11-26 | 2013-04-09 | Wireless Environment, Llc | Switch sensing emergency lighting device |
US20120001548A1 (en) | 2008-11-26 | 2012-01-05 | Wireless Environment, Llc | Switch sensing emergency lighting device |
US8378589B2 (en) | 2008-12-12 | 2013-02-19 | O2Micro, Inc. | Driving circuit with dimming controller for driving light sources |
US20100148691A1 (en) * | 2008-12-12 | 2010-06-17 | O2Micro, Inc. | Driving circuit with dimming controller for driving light sources |
US8378588B2 (en) | 2008-12-12 | 2013-02-19 | O2Micro Inc | Circuits and methods for driving light sources |
US20100219766A1 (en) | 2008-12-12 | 2010-09-02 | Ching-Chuan Kuo | Circuits and methods for driving light sources |
US9030122B2 (en) | 2008-12-12 | 2015-05-12 | O2Micro, Inc. | Circuits and methods for driving LED light sources |
US8644041B2 (en) | 2009-01-14 | 2014-02-04 | Nxp B.V. | PFC with high efficiency at low load |
US20100176733A1 (en) | 2009-01-14 | 2010-07-15 | Purespectrum, Inc. | Automated Dimming Methods and Systems For Lighting |
US20100231136A1 (en) | 2009-03-13 | 2010-09-16 | Led Specialists Inc. | Line voltage dimmable constant current led driver |
US20120032604A1 (en) | 2009-04-21 | 2012-02-09 | Koninklijke Philips Electronics N.V. | System for driving a lamp |
CN101896022A (en) | 2009-05-18 | 2010-11-24 | 海洋王照明科技股份有限公司 | LED dimming control circuit |
US8098021B2 (en) | 2009-05-26 | 2012-01-17 | Cal-Comp Electronics & Communications Company Limited | Driving circuit of light emitting diode and lighting apparatus |
US20120056553A1 (en) | 2009-05-29 | 2012-03-08 | Nxp B.V. | Circuit for connecting a low current lighting circuit to a dimmer |
US20120081009A1 (en) | 2009-06-04 | 2012-04-05 | Exclara Inc. | Apparatus, Method and System for Providing AC Line Power to Lighting Devices |
US8569956B2 (en) | 2009-06-04 | 2013-10-29 | Point Somee Limited Liability Company | Apparatus, method and system for providing AC line power to lighting devices |
US8373313B2 (en) | 2009-06-15 | 2013-02-12 | Homerun Holdings Corporation | Three-way switch for home automation apparatus and method |
CN101868090A (en) | 2009-06-29 | 2010-10-20 | 潘忠浩 | Circuit for dimming or speed regulation control and control method |
CN101938865A (en) | 2009-06-30 | 2011-01-05 | 飞宏科技股份有限公司 | Dimmable light-emitting diode device used for reducing output ripple current and driving circuit thereof |
US20110012530A1 (en) | 2009-07-14 | 2011-01-20 | Iwatt Inc. | Adaptive dimmer detection and control for led lamp |
US20120274227A1 (en) | 2009-07-14 | 2012-11-01 | Iwatt Inc. | Adaptive dimmer detection and control for led lamp |
CN102474953A (en) | 2009-07-28 | 2012-05-23 | 首尔半导体股份有限公司 | Dimming device for a lighting apparatus |
US20110037399A1 (en) | 2009-08-13 | 2011-02-17 | Novatek Microelectronics Corp. | Dimmer circuit of light emitting diode and isolated voltage generator and dimmer method thereof |
US8278832B2 (en) | 2009-08-13 | 2012-10-02 | Novatek Microelectronics Corp. | Dimmer circuit of light emitting diode and isolated voltage generator and dimmer method thereof |
CN101998734A (en) | 2009-08-21 | 2011-03-30 | 东芝照明技术株式会社 | Lighting circuit and illumination device |
US20120146526A1 (en) | 2009-08-21 | 2012-06-14 | John Lam | Electronic Ballast with High Power Factor |
CN101657057A (en) | 2009-08-21 | 2010-02-24 | 深圳市金流明光电技术有限公司 | LED power circuit |
US20130162155A1 (en) * | 2009-08-21 | 2013-06-27 | Kabushiki Kaisha Toshiba | Lighting circuit and illumination device |
US8134302B2 (en) | 2009-09-14 | 2012-03-13 | System General Corporation | Offline LED driving circuits |
CN102014551A (en) | 2009-09-17 | 2011-04-13 | 凹凸电子(武汉)有限公司 | Circuit, method and system for driving a light source and controller |
TW201208481A (en) | 2009-09-28 | 2012-02-16 | Koninkl Philips Electronics Nv | Method and apparatus providing deep dimming of solid state lighting systems |
US20120181944A1 (en) | 2009-09-28 | 2012-07-19 | Koninklijke Philips Electronics N.V. | Method and apparatus providing deep dimming of solid state lighting systems |
TW201132241A (en) | 2009-09-30 | 2011-09-16 | Cirrus Logic Inc | Phase control dimming compatible lighting systems |
US20110074302A1 (en) | 2009-09-30 | 2011-03-31 | Draper William A | Phase Control Dimming Compatible Lighting Systems |
US20110080112A1 (en) | 2009-10-07 | 2011-04-07 | Lutron Electronics Co., Inc. | Closed-loop load control circuit having a wide output range |
US20110080111A1 (en) | 2009-10-07 | 2011-04-07 | Lutron Electronics Co., Inc. | Configurable load control device for light-emitting diode light sources |
US20110080110A1 (en) | 2009-10-07 | 2011-04-07 | Lutron Electronics Co., Inc. | Load control device for a light-emitting diode light source |
US8947010B2 (en) | 2009-10-14 | 2015-02-03 | Nationl Semiconductor Corporation | Dimmer decoder with low duty cycle handling for use with LED drivers |
US8686668B2 (en) | 2009-10-26 | 2014-04-01 | Koninklijke Philips N.V. | Current offset circuits for phase-cut power control |
US20110101867A1 (en) | 2009-11-03 | 2011-05-05 | Cal-Comp Electronics & Communications Company Limited | Lighting apparatus, driving circuit of light emitting diode and driving method thereof |
TWI423732B (en) | 2009-11-03 | 2014-01-11 | Cal Comp Electronics & Comm Co | Lighting apparatus, driving circuit of light emitting diode and driving method using the same |
CN102056378A (en) | 2009-11-03 | 2011-05-11 | 英特赛尔美国股份有限公司 | Led driver with open loop dimming control |
TW201125441A (en) | 2009-11-03 | 2011-07-16 | Intersil Inc | LED driver with open loop dimming control |
TWI387396B (en) | 2009-11-10 | 2013-02-21 | Green Mark Technology Inc | Dimmable led lamp and dimmable led lighting apparatus |
CN102668717A (en) | 2009-11-19 | 2012-09-12 | 皇家飞利浦电子股份有限公司 | Method and apparatus for detecting dimmer phase angle and selectively determining universal input voltage for solid state lighting fixtures |
US20110121744A1 (en) | 2009-11-20 | 2011-05-26 | Lutron Electronics Co., Inc. | Controllable-load circuit for use with a load control device |
US9220133B2 (en) | 2009-11-20 | 2015-12-22 | Lutron Electronics Co., Inc. | Controllable-load circuit for use with a load control device |
US10447171B2 (en) | 2009-11-25 | 2019-10-15 | Lutron Technology Company Llc | Load control device for high-efficiency loads |
US10530268B2 (en) | 2009-11-25 | 2020-01-07 | Lutron Technology Company Llc | Load control device for high-efficiency loads |
US20110187283A1 (en) | 2010-01-31 | 2011-08-04 | Microsemi Corporation | Dimming input suitable for multiple dimming signal types |
TW201143501A (en) | 2010-02-05 | 2011-12-01 | Sharp Kk | LED drive circuit, dimming device, LED illumination fixture, LED illumination device, and LED illumination system |
CN102014540A (en) | 2010-03-04 | 2011-04-13 | 凹凸电子(武汉)有限公司 | Drive circuit and controller for controlling electric power of light source |
US20110133662A1 (en) | 2010-03-04 | 2011-06-09 | Yan Tiesheng | Circuits and methods for driving light sources |
US8890440B2 (en) | 2010-03-04 | 2014-11-18 | O2Micro, Inc. | Circuits and methods for driving light sources |
US8698419B2 (en) | 2010-03-04 | 2014-04-15 | O2Micro, Inc. | Circuits and methods for driving light sources |
CN102870497A (en) | 2010-03-18 | 2013-01-09 | 皇家飞利浦电子股份有限公司 | Method and apparatus for increasing dimming range of solid state lighting fixtures |
TW201204168A (en) | 2010-03-18 | 2012-01-16 | Koninkl Philips Electronics Nv | Method and apparatus for increasing dimming range of solid state lighting fixtures |
US20110227490A1 (en) | 2010-03-19 | 2011-09-22 | Active-Semi, Inc. | AC LED lamp involving an LED string having separately shortable sections |
US20130141001A1 (en) | 2010-03-25 | 2013-06-06 | Koninklijke Philips Electronics, N.V. | Method and apparatus for increasing dimming range of solid state lighting fixtures |
US9485833B2 (en) | 2010-03-25 | 2016-11-01 | Koninklijke Philips N.V. | Method and apparatus for increasing dimming range of solid state lighting fixtures |
US20110260619A1 (en) | 2010-03-29 | 2011-10-27 | Innosys, Inc. | LED Dimming Driver |
CN102209412A (en) | 2010-03-31 | 2011-10-05 | 光旴科技股份有限公司 | Control circuit of controlling the illumination brightness of bicycle according to bicycle speed |
US20130193866A1 (en) | 2010-04-14 | 2013-08-01 | Koninklijke Philips Electronics, N.V. | Method and apparatus for detecting presence of dimmer and controlling power delivered to solid state lighting load |
TW201208486A (en) | 2010-04-27 | 2012-02-16 | Koninkl Philips Electronics Nv | Method and apparatus for adjusting light output range of solid state lighting load based on maximum and minimum dimmer settings |
US8558477B2 (en) | 2010-04-30 | 2013-10-15 | Osram Gesellschaft Mit Beschraenkter Haftung | Method and device for obtaining conduction angle, method and device for driving LED |
US20130193879A1 (en) | 2010-05-10 | 2013-08-01 | Innosys, Inc. | Universal Dimmer |
CN103313472A (en) | 2010-05-19 | 2013-09-18 | 成都芯源系统有限公司 | LED drive circuit with dimming function and lamp |
US20110285301A1 (en) | 2010-05-19 | 2011-11-24 | Naixing Kuang | Triac dimmer compatible switching mode power supply and method thereof |
EP2403318A1 (en) | 2010-05-19 | 2012-01-04 | O2 Micro, Inc. | Circuits and methods for driving light sources |
TW201143530A (en) | 2010-05-19 | 2011-12-01 | O2Micro Inc | Dimming controllers, driving circuits and methods for controlling power of light source |
JP2011249328A (en) | 2010-05-25 | 2011-12-08 | National Semiconductor Corp | Driving system with inductor pre-charging for led systems with pwm dimming control or other loads |
TW201146087A (en) | 2010-06-01 | 2011-12-16 | Jd Tek Jim Dandy Technology Corp | Dimmable circuit applicable for LED lighting device and control method thereof |
US20110291583A1 (en) | 2010-06-01 | 2011-12-01 | Feng-Min Shen | Dimmer circuit applicable for led device and control method thereof |
TWI434616B (en) | 2010-06-01 | 2014-04-11 | United Power Res Technology Corp | Dimmable circuit applicable for led lighting device and control method thereof |
US20130020965A1 (en) | 2010-06-25 | 2013-01-24 | Power Integrations, Inc. | Power converter with compensation circuit for adjusting output current provided to a constant load |
CN102387634A (en) | 2010-06-30 | 2012-03-21 | 电力集成公司 | Dimmer-disabled led driver |
US20110140621A1 (en) | 2010-07-02 | 2011-06-16 | Yi Xinmin | Circuits and methods for controlling a light source |
US20110140620A1 (en) | 2010-07-12 | 2011-06-16 | Lin Yung Lin | Circuits and methods for controlling dimming of a light source |
CN103004290A (en) | 2010-07-13 | 2013-03-27 | 皇家飞利浦电子股份有限公司 | Bleeding circuit and related method for preventing improper dimmer operation |
CN102347607A (en) | 2010-07-28 | 2012-02-08 | 半导体元件工业有限责任公司 | Adaptive current limiter and dimmer system including the same |
CN101917804A (en) | 2010-08-03 | 2010-12-15 | 东莞市石龙富华电子有限公司 | Large-power intelligent dimming multiple-output power supply for suppressing electric surge with field-effect transistor |
TW201208463A (en) | 2010-08-10 | 2012-02-16 | O2Micro Inc | Circuits and methods for driving light sources, and controllers for controlling dimming of light source |
US20130162158A1 (en) | 2010-08-31 | 2013-06-27 | Thomas Pollischansky | Circuit Assembly and Method for Operating at Least one LED |
TW201215228A (en) | 2010-09-16 | 2012-04-01 | Addtek Corp | Light-emitting driving circuit with function of dynamic loading and increasing power factor and related dynamic loading module |
US20120069616A1 (en) | 2010-09-17 | 2012-03-22 | Toshiba Lighting & Technology Corporation | Switching power supply device, and adjustable power supply system including the same |
US20130241428A1 (en) | 2010-09-27 | 2013-09-19 | Mitsubishi Chemical Corporation | Led illumination apparatus and led illumination system |
US20120081032A1 (en) | 2010-09-30 | 2012-04-05 | Taiwan Semiconductor Manufacturing Company, Ltd. | Mechanisms for anti-flickering |
US20120081035A1 (en) | 2010-10-04 | 2012-04-05 | Mccune Jr Earl W | Power Conversion and Control Systems and Methods for Solid-State Lighting |
US9084316B2 (en) | 2010-11-04 | 2015-07-14 | Cirrus Logic, Inc. | Controlled power dissipation in a switch path in a lighting system |
US9207265B1 (en) | 2010-11-12 | 2015-12-08 | Cirrus Logic, Inc. | Dimmer detection |
US8653750B2 (en) | 2010-11-17 | 2014-02-18 | Nxp B.V. | Method of controlling an electronic ballast, an electronic ballast and a lighting controller |
US20120299500A1 (en) | 2010-11-22 | 2012-11-29 | Innosys, Inc. | Dimmable Timer-Based LED Power Supply |
US20120187857A1 (en) | 2011-01-06 | 2012-07-26 | Texas Instruments Deutschland Gmbh | Lighting system, electronic device for a lighting system and method for operating the electronic device |
CN102612194A (en) | 2011-01-19 | 2012-07-25 | 群燿科技股份有限公司 | Dimming circuit, control method, micro controller and phase angle detection method for micro controller |
TWI422130B (en) | 2011-01-26 | 2014-01-01 | Macroblock Inc | Adaptive bleeder circuit |
TW201233021A (en) | 2011-01-26 | 2012-08-01 | Macroblock Inc | Adaptive bleeder circuit |
US8896288B2 (en) | 2011-02-17 | 2014-11-25 | Marvell World Trade Ltd. | TRIAC dimmer detection |
US20130063047A1 (en) | 2011-03-15 | 2013-03-14 | Lutron Electronics Co., Inc. | Load Control Device for a Light-Emitting Diode Light Source |
US20170027029A1 (en) | 2011-03-17 | 2017-01-26 | Shanghai Sim-Bcd Semiconductor Manufacturing Co., Ltd. | Power supply for led lamp with triac dimmer |
CN102695330A (en) | 2011-03-22 | 2012-09-26 | 立锜科技股份有限公司 | Light emitting device power supply circuit, and light emitting device driver circuit and control method thereof |
US20120242237A1 (en) | 2011-03-23 | 2012-09-27 | Hangzhou Silergy Semiconductor Technology LTD | Scr dimming circuit and method |
US8497637B2 (en) | 2011-04-13 | 2013-07-30 | Gang Gary Liu | Constant voltage dimmable LED driver |
US20120262093A1 (en) | 2011-04-15 | 2012-10-18 | Recker Michael V | Lighting device capable of maintaining light intensity in demand response applications |
US9414455B2 (en) | 2011-04-22 | 2016-08-09 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control with capacitive loads |
US20120268031A1 (en) | 2011-04-22 | 2012-10-25 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control with capacitive loads |
TWI448198B (en) | 2011-04-22 | 2014-08-01 | On Bright Electronics Shanghai | System and method for dimming control under capacitive loads |
US8941324B2 (en) | 2011-04-22 | 2015-01-27 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control with capacitive loads |
TW201244543A (en) | 2011-04-22 | 2012-11-01 | On Bright Electronics Shanghai | Systems and methods for dimming control with capacitive loads |
US20150091470A1 (en) | 2011-04-22 | 2015-04-02 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control with capacitive loads |
US20130009561A1 (en) | 2011-05-10 | 2013-01-10 | Arkalumen Inc. | Circuits for sensing current levels within a lighting apparatus incorporating a voltage converter |
US20120286679A1 (en) | 2011-05-10 | 2012-11-15 | Richtek Technology Corporation | Light emitting device current regulator circuit and control method thereof |
US9554432B2 (en) | 2011-05-11 | 2017-01-24 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using system controllers |
US20160037604A1 (en) | 2011-05-11 | 2016-02-04 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using system controllers |
US20170181235A1 (en) | 2011-05-11 | 2017-06-22 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using system controllers |
US10292217B2 (en) | 2011-05-11 | 2019-05-14 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using system controllers |
US20130307431A1 (en) | 2011-05-11 | 2013-11-21 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using system controllers |
US9301349B2 (en) | 2011-05-11 | 2016-03-29 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using system controllers |
CN102791056A (en) | 2011-05-18 | 2012-11-21 | 马士科技有限公司 | Wireless illumination control system and remote controller and system manager thereof |
US20120299511A1 (en) | 2011-05-26 | 2012-11-29 | Charles J. Montante | Controlling the Light Output of One or More LEDs In Response to the Output of a Dimmer |
US20120319604A1 (en) | 2011-06-17 | 2012-12-20 | Intersil Americas Inc. | Cascade boost and inverting buck converter with independent control |
US20120326616A1 (en) | 2011-06-23 | 2012-12-27 | Rohm Co., Ltd. | Light emitter driving device and lighting appliance therewith |
TWI441428B (en) | 2011-07-06 | 2014-06-11 | Macroblock Inc | Auto-selecting holding current circuit |
US9723676B2 (en) | 2011-07-26 | 2017-08-01 | Abl Ip Holding Llc | Method and system for modifying a beacon light source for use in a light based positioning system |
US8432438B2 (en) | 2011-07-26 | 2013-04-30 | ByteLight, Inc. | Device for dimming a beacon light source used in a light based positioning system |
US20130026945A1 (en) | 2011-07-26 | 2013-01-31 | ByteLight, Inc. | Method and system for modifying a beacon light source for use in a light based positioning system |
US20130027528A1 (en) | 2011-07-26 | 2013-01-31 | ByteLight, Inc. | Method and system for video processing to determine digital pulse recognition tones |
US20130026942A1 (en) | 2011-07-26 | 2013-01-31 | ByteLight, Inc. | Device for dimming a beacon light source used in a light based positioning system |
US8716882B2 (en) | 2011-07-28 | 2014-05-06 | Powerline Load Control Llc | Powerline communicated load control |
US20130034172A1 (en) | 2011-07-28 | 2013-02-07 | Pettler Peter R | Powerline Communicated Load Control |
CN103858524A (en) | 2011-08-19 | 2014-06-11 | 马维尔国际贸易有限公司 | Method and apparatus for TRIAC applications |
US20130043726A1 (en) | 2011-08-19 | 2013-02-21 | Ravishanker Krishnamoorthy | Method and apparatus for triac applications |
US20130049631A1 (en) | 2011-08-23 | 2013-02-28 | Scott A. Riesebosch | Led lamp with variable dummy load |
US20140197760A1 (en) | 2011-09-06 | 2014-07-17 | Koninklijke Philips N.V. | Power control unit and method for controlling electrical power provided to a load, in particular an led unit, and voltage control unit for controlling an output voltage of a converter unit |
CN102300375A (en) | 2011-09-21 | 2011-12-28 | 缪仙荣 | Light emitting diode (LED) dimming circuit applicable to silicon controlled rectifier dimmer |
TW201315118A (en) | 2011-09-28 | 2013-04-01 | Monolithic Power Systems Inc | Power converter and the method thereof |
CN202353859U (en) | 2011-10-24 | 2012-07-25 | 深圳华路仕科技有限公司 | Controllable silicon light regulation device and illuminating system |
CN103096606A (en) | 2011-11-07 | 2013-05-08 | Nxp股份有限公司 | Method of controlling a ballast, a ballast, a lighting controller, and a digital signal processor |
EP2590477A1 (en) | 2011-11-07 | 2013-05-08 | Nxp B.V. | A method of controlling a ballast, a ballast, a lighting controller, and a digital signal processor |
TW201322825A (en) | 2011-11-24 | 2013-06-01 | Leadtrend Tech Corp | Dimmable driving systems and dimmable controllers |
US20130134904A1 (en) | 2011-11-24 | 2013-05-30 | Leadtrend Technology Corp. | Dimming driving system and dimming controller |
CN102497706A (en) | 2011-12-15 | 2012-06-13 | 成都芯源系统有限公司 | LED driving device and driving method and controller |
US20130154487A1 (en) | 2011-12-15 | 2013-06-20 | Chengdu Monolithic Power Systems Co., Ltd. | Triac dimmer compatible led driver and method thereof |
TWI496502B (en) | 2011-12-15 | 2015-08-11 | Monolithic Power Systems Inc | Led drive device, drive method and controller |
US20140300274A1 (en) | 2011-12-16 | 2014-10-09 | Beniamin Acatrinei | Near unity power factor long life low cost led lamp retrofit system and method |
US20130169177A1 (en) | 2011-12-30 | 2013-07-04 | Richtek Technology Corporation | Active Bleeder Circuit Triggering TRIAC in All Phase and Light Emitting Device Power Supply Circuit and TRIAC Control Method Using the Active Bleeder Circuit |
TW201336345A (en) | 2012-01-05 | 2013-09-01 | Innosys Inc | Triac dimming control system |
US20130175931A1 (en) | 2012-01-05 | 2013-07-11 | Laurence P. Sadwick | Triac Dimming Control System |
US20140103829A1 (en) | 2012-01-13 | 2014-04-17 | Power Integrations, Inc. | Feed forward imbalance corrector circuit |
US20130181630A1 (en) | 2012-01-17 | 2013-07-18 | Mark S. Taipale | Digital load control system providing power and communication via existing power wiring |
US20130187568A1 (en) | 2012-01-25 | 2013-07-25 | Dialog Semiconductor Gmbh | Dimming Method and System for LED Lamp Assemblies |
US20130194848A1 (en) | 2012-01-31 | 2013-08-01 | Gabriele Bernardinis | Current-balancing in interleaved circuit phases |
US20140354165A1 (en) | 2012-02-02 | 2014-12-04 | Koninklijke Philips N.V. | Led light source |
US20130215655A1 (en) | 2012-02-17 | 2013-08-22 | Seung-Uk YANG | Switch controller, switch control method, and power supply device comprising the switch controller |
US20150357910A1 (en) | 2012-03-01 | 2015-12-10 | Panasonic Corp | Dc power supply circuit |
US20130249431A1 (en) | 2012-03-05 | 2013-09-26 | Luxera, Inc. | Dimmable Hybrid Adapter for a Solid State Lighting System, Apparatus and Method |
US20130229121A1 (en) | 2012-03-05 | 2013-09-05 | Toshiba Lighting & Technology Corporation | Power supply for illumination and luminaire |
US20130241427A1 (en) | 2012-03-13 | 2013-09-19 | Iwatt Inc. | Power dissipation monitor for current sink function of power switching transistor |
US20130241441A1 (en) | 2012-03-13 | 2013-09-19 | Iwatt Inc. | Adaptive Compensation for Effects of Cat-Ear Dimmers on Conduction Angle Measurement |
US20130242622A1 (en) | 2012-03-14 | 2013-09-19 | Marvell World Trade Ltd. | Method and apparatus for starting up |
US20150048757A1 (en) | 2012-03-16 | 2015-02-19 | Koninklijke Philips N.V. | Circuit arrangement |
TW201342987A (en) | 2012-04-03 | 2013-10-16 | Himax Analogic Inc | Illumination driver circuit |
US20130278159A1 (en) | 2012-04-18 | 2013-10-24 | Power Integrations, Inc. | Bleeder circuit for use in a power supply |
CN103379712A (en) | 2012-04-18 | 2013-10-30 | 电力集成公司 | Bleeder circuit for use in a power supply |
CN202632722U (en) | 2012-05-04 | 2012-12-26 | 福建捷联电子有限公司 | LED drive circuit |
TW201348909A (en) | 2012-05-17 | 2013-12-01 | On Bright Electronics Shanghai | Systems and methods for dimming control using system controllers |
CN103428953A (en) | 2012-05-17 | 2013-12-04 | 昂宝电子(上海)有限公司 | System and method for utilizing system controller to realize light-dimming controlling |
US20130307430A1 (en) | 2012-05-18 | 2013-11-21 | Nxp B.V. | Control circuit for a phase-cut dimmer and a method of controlling a phase-cut dimmer |
US20130307434A1 (en) | 2012-05-21 | 2013-11-21 | Marvell World Trade Ltd. | Method and apparatus for controlling a lighting device |
US9220136B2 (en) | 2012-05-21 | 2015-12-22 | Marvell World Trade Ltd. | Method and apparatus for controlling a lighting device |
US20150077009A1 (en) | 2012-05-28 | 2015-03-19 | Panasonic Intellectual Property Management Co., Ltd. | Light-emitting diode driving apparatus and semiconductor device |
US20130343090A1 (en) | 2012-06-21 | 2013-12-26 | Fairchild Korea Semiconductor Ltd. | Active bleeder, active bleeding method, and power supply device where the active bleeder is applied |
US20130342127A1 (en) | 2012-06-25 | 2013-12-26 | Richtek Technology Corporation | Led control device for phase-cut dimming system and control method thereof |
US20140009082A1 (en) | 2012-07-03 | 2014-01-09 | Cirrus Logic, Inc. | Systems and methods for determining a type of transformer to which a load is coupled |
CN103547014A (en) | 2012-07-12 | 2014-01-29 | 全汉企业股份有限公司 | Load driving device associated with light-emitting diode lamp tube and method of load driving device |
US20140029315A1 (en) | 2012-07-24 | 2014-01-30 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for current control of power conversion systems |
US9167638B2 (en) | 2012-08-14 | 2015-10-20 | Nxp B.V. | LED controller circuit |
US20140049177A1 (en) | 2012-08-17 | 2014-02-20 | Trw Automotive U.S. Llc | Method and Apparatus To Control Light Intensity As Voltage Fluctuates |
TW201412189A (en) | 2012-08-28 | 2014-03-16 | Silergy Corp | Controlled-silicon adapting LED (light-emitting diode) driving circuit, method and switch power supply |
CN102843836A (en) | 2012-08-28 | 2012-12-26 | 矽力杰半导体技术(杭州)有限公司 | Controlled-silicon adapting LED (light-emitting diode) driving circuit, method and switch power supply |
US20140063857A1 (en) | 2012-08-31 | 2014-03-06 | Marvell World Trade Ltd. | Method and apparatus for controlling a lighting device |
TW201417626A (en) | 2012-08-31 | 2014-05-01 | Marvell World Trade Ltd | Method and apparatus for controlling a lighting device |
US20140078790A1 (en) | 2012-09-14 | 2014-03-20 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for voltage control and current control of power conversion systems with multiple operation modes |
TW201414146A (en) | 2012-09-21 | 2014-04-01 | Anwell Semiconductor Corp | Power conversion control chip and device thereof |
CN103716934A (en) | 2012-09-28 | 2014-04-09 | 凹凸电子(武汉)有限公司 | Driving circuit for driving light source, method and controller |
CN103781229A (en) | 2012-10-25 | 2014-05-07 | 上海占空比电子科技有限公司 | Dimming circuit compatible with silicon controlled rectifier dimmer and control method |
TW201417631A (en) | 2012-10-31 | 2014-05-01 | Schneider Electric South East Asia Hq Pte Ltd | Power supply method for dimming system and dimming system |
TW201424454A (en) | 2012-11-02 | 2014-06-16 | Rab Lighting Inc | Dimming for constant current LED driver circuit |
US10455657B2 (en) | 2012-11-12 | 2019-10-22 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using TRIAC dimmers |
US10194500B2 (en) | 2012-11-12 | 2019-01-29 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using TRIAC dimmers |
CN103024994A (en) | 2012-11-12 | 2013-04-03 | 昂宝电子(上海)有限公司 | Dimming control system and method employing TRIAC dimmer |
US20140132172A1 (en) | 2012-11-12 | 2014-05-15 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using triac dimmers |
US10999904B2 (en) | 2012-11-12 | 2021-05-04 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using TRIAC dimmers |
US10448470B2 (en) | 2012-11-12 | 2019-10-15 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using triac dimmers |
US9961734B2 (en) | 2012-11-12 | 2018-05-01 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using TRIAC dimmers |
US20180288845A1 (en) | 2012-11-12 | 2018-10-04 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using triac dimmers |
US20160338163A1 (en) | 2012-11-12 | 2016-11-17 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using triac dimmers |
US20200100340A1 (en) | 2012-11-12 | 2020-03-26 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using triac dimmers |
US20140346973A1 (en) | 2012-11-12 | 2014-11-27 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using triac dimmers |
TW201515514A (en) | 2012-11-12 | 2015-04-16 | On Bright Electronics Shanghai | Systems and methods for dimming control using triac dimmers |
US20190069364A1 (en) | 2012-11-12 | 2019-02-28 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using triac dimmers |
US9408269B2 (en) | 2012-11-12 | 2016-08-02 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control using TRIAC dimmers |
TW201422045A (en) | 2012-11-16 | 2014-06-01 | Anwell Semiconductor Corp | High stability LED control circuit |
CN102946674A (en) | 2012-11-20 | 2013-02-27 | 矽力杰半导体技术(杭州)有限公司 | Controllable silicon dimming circuit with nondestructive leakage circuit and method thereof |
US20160286617A1 (en) * | 2012-12-07 | 2016-09-29 | Panasonic Intellectual Property Management Co., Ltd. | Drive circuit, illumination source, and lighting device |
US20140160809A1 (en) | 2012-12-10 | 2014-06-12 | On-Bright Electronics (Shanghai)Co., Ltd. | Systems and methods for peak current adjustments in power conversion systems |
US20140176016A1 (en) | 2012-12-17 | 2014-06-26 | Ecosense Lighting Inc. | Systems and methods for dimming of a light source |
US20150318789A1 (en) | 2012-12-21 | 2015-11-05 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for source switching and voltage generation |
US20140177280A1 (en) | 2012-12-21 | 2014-06-26 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for source switching and voltage generation |
CN103260302A (en) | 2013-01-14 | 2013-08-21 | 美芯晟科技(北京)有限公司 | LED driver with adjustable conduction time |
CN103108470A (en) | 2013-02-06 | 2013-05-15 | 深圳市芯飞凌半导体有限公司 | Dynamic linear control light emitting diode (LED) driver circuit |
US20140265935A1 (en) | 2013-03-14 | 2014-09-18 | Laurence P. Sadwick | Digital Dimmable Driver |
US9173258B2 (en) | 2013-03-14 | 2015-10-27 | Cree, Inc. | Lighting apparatus including a current bleeder module for sinking current during dimming of the lighting apparatus and methods of operating the same |
US20140265907A1 (en) | 2013-03-14 | 2014-09-18 | O2Micro, Inc. | Circuits and methods for driving light sources |
US20140265898A1 (en) | 2013-03-15 | 2014-09-18 | Power Integrations, Inc. | Lossless preload for led driver with extended dimming |
US9148050B2 (en) | 2013-03-18 | 2015-09-29 | Power Forest Technology Corporation | AC/DC converting circuit |
US20140268935A1 (en) | 2013-03-18 | 2014-09-18 | Power Forest Technology Corporation | Ac/dc converting circuit and starting method thereof |
US8941328B2 (en) | 2013-04-26 | 2015-01-27 | Unity Opto Technology Co., Ltd. | Variable power dimming control circuit |
US20140320031A1 (en) | 2013-04-26 | 2014-10-30 | Unity Opto Technology Co., Ltd. | Variable power dimming control circuit |
US8829819B1 (en) | 2013-05-07 | 2014-09-09 | Power Integrations, Inc. | Enhanced active preload for high performance LED driver with extended dimming |
US20140333228A1 (en) | 2013-05-07 | 2014-11-13 | Power Integrations, Inc. | Dimmer detector for bleeder circuit activation |
US20160128142A1 (en) | 2013-05-17 | 2016-05-05 | Koninklijke Philips N.V. | Driver device and driving method for driving a load, in particular an led unit |
US20140354170A1 (en) | 2013-05-29 | 2014-12-04 | Lutron Electronics Co., Inc. | Load control device for a light-emitting diode light source |
US20140354157A1 (en) | 2013-05-31 | 2014-12-04 | Isine, Inc. | Current steering module for use with led strings |
US20160119998A1 (en) | 2013-06-05 | 2016-04-28 | Koninklijke Philips N.V. | Apparatus for controlling light module |
CN105265019A (en) | 2013-06-05 | 2016-01-20 | 皇家飞利浦有限公司 | Apparatus for controlling light module |
US8941323B1 (en) | 2013-07-05 | 2015-01-27 | Unity Opto Technology Co., Ltd. | Ceiling lamp adopting non-separating driver circuit |
TW201503756A (en) | 2013-07-15 | 2015-01-16 | Luxmill Electronic Co Ltd | LED driver capable of regulating power dissipation and LED lighting apparatus using same |
US20150015159A1 (en) | 2013-07-15 | 2015-01-15 | Luxmill Electronic Co., Ltd. | Led driver capable of regulating power dissipation and led lighting apparatus using same |
US20150035450A1 (en) | 2013-08-01 | 2015-02-05 | Cambridge Semiconductor Limited | Solid state lighting control |
CN103369802A (en) | 2013-08-02 | 2013-10-23 | 叶鸣 | Design method of LED (light-emitting diode) dimming driving switching power supply applied to various traditional dimmers |
TWI535175B (en) | 2013-08-29 | 2016-05-21 | Silergy Semiconductor Technology Hangzhou Ltd | Load driving circuit and method thereof |
CN103458579A (en) | 2013-08-29 | 2013-12-18 | 矽力杰半导体技术(杭州)有限公司 | Load driving circuit and method |
US20150062981A1 (en) | 2013-08-29 | 2015-03-05 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for adjusting frequencies and currents based on load conditions of power conversion systems |
TWI540809B (en) | 2013-10-21 | 2016-07-01 | 矽力杰半導體技術(杭州)有限公司 | Overvoltage protection method and circuit for switching power supply output and switching power supply provided with the circuit |
US9467137B2 (en) | 2013-11-18 | 2016-10-11 | Fairchild Korea Semiconductor Ltd. | Input current control method, switch control circuit and power supply including the switch control circuit |
US20150137704A1 (en) | 2013-11-19 | 2015-05-21 | Power Integrations, Inc. | Bleeder circuit emulator for a power converter |
CN204392621U (en) | 2013-11-19 | 2015-06-10 | 电力集成公司 | Bleeder circuit emulator, power converter and comprise the device of power converter |
US20150173140A1 (en) | 2013-12-17 | 2015-06-18 | Unity Opto Technology Co., Ltd. | Led driver circuit for supplying triac holding current by using controllable current source |
TWM477115U (en) | 2013-12-17 | 2014-04-21 | Unity Opto Technology Co Ltd | LED driver circuit providing TRIAC holding current using controlled current source |
CN103648219A (en) | 2013-12-19 | 2014-03-19 | 上海莱托思电子科技有限公司 | Light-emitting diode (LED) switch constant-current driving circuit |
CN104768265A (en) | 2014-01-02 | 2015-07-08 | 深圳市海洋王照明工程有限公司 | High-power LED constant-current driving circuit |
CN203675408U (en) | 2014-01-30 | 2014-06-25 | 杰华特微电子(杭州)有限公司 | Short-circuit protection circuit for LED lighting device |
US9131581B1 (en) | 2014-03-14 | 2015-09-08 | Lightel Technologies, Inc. | Solid-state lighting control with dimmability and color temperature tunability |
CN106105395A (en) | 2014-03-18 | 2016-11-09 | 飞利浦照明控股有限公司 | Bleeder controls device |
US20170099712A1 (en) | 2014-03-18 | 2017-04-06 | Philips Lighting Holding B.V. | Bleeder control arrangement |
EP2938164A2 (en) | 2014-04-24 | 2015-10-28 | Power Integrations, Inc. | Multi-bleeder mode control for improved led driver performance |
US9402293B2 (en) | 2014-04-24 | 2016-07-26 | Power Integrations, Inc. | Multi-bleeder mode control for improved LED driver performance |
US20150312978A1 (en) | 2014-04-24 | 2015-10-29 | Power Integrations, Inc. | Multi-bleeder mode control for improved led driver performance |
US9480118B2 (en) | 2014-04-25 | 2016-10-25 | Guangzhou On-Bright Electronics Co., Ltd. | Systems and methods for intelligent control related to TRIAC dimmers |
US20170064787A1 (en) | 2014-04-25 | 2017-03-02 | Guangzhou On-Bright Electronics Co., Ltd. | Systems and methods for intelligent control related to triac dimmers |
CN103957634A (en) | 2014-04-25 | 2014-07-30 | 广州昂宝电子有限公司 | Illuminating system and control method thereof |
US11212885B2 (en) | 2014-04-25 | 2021-12-28 | Guangzhou On-Bright Electronics Co., Ltd. | Systems and methods for intelligent control related to TRIAC dimmers |
US20150312988A1 (en) | 2014-04-25 | 2015-10-29 | Guangzhou On-Bright Electronics Co., Ltd. | Systems and methods for intelligent control related to triac dimmers |
US20190069366A1 (en) | 2014-04-25 | 2019-02-28 | Guangzhou On-Bright Electronics Co., Ltd. | Systems and methods for intelligent control related to triac dimmers |
CN103945614A (en) | 2014-04-25 | 2014-07-23 | 昂宝电子(上海)有限公司 | Illumination system and drive circuit |
US10383187B2 (en) | 2014-04-25 | 2019-08-13 | Guangzhou On-Bright Electronics Co., Ltd. | Systems and methods for intelligent control related to TRIAC dimmers |
TWI524814B (en) | 2014-04-25 | 2016-03-01 | A system and method for LED TRIAC dimming adaptive control | |
US20150333764A1 (en) | 2014-05-13 | 2015-11-19 | Power Integrations, Inc. | Digital-to-analog converter circuit for use in a power converter |
TW201607368A (en) | 2014-05-19 | 2016-02-16 | 微晶片科技公司 | Method and system for improving LED lifetime and color quality in dimming apparatus |
US20150359054A1 (en) | 2014-06-05 | 2015-12-10 | Leadtrend Technology Corporation | Control methods and power converters suitable for triac dimming |
US20150366010A1 (en) | 2014-06-12 | 2015-12-17 | Power Integrations, Inc. | Line ripple compensation for shimmerless led driver |
US20150382424A1 (en) | 2014-06-25 | 2015-12-31 | Ketra, Inc. | Illumination Device and Method for Controlling an Illumination Device over Changes in Drive Current and Temperature |
US9585222B2 (en) | 2014-07-08 | 2017-02-28 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for intelligent dimming control using TRIAC dimmers |
TW201603644A (en) | 2014-07-08 | 2016-01-16 | On Bright Electronics Shanghai | Light modulation control system and method using TRIAC light modulator |
US10334677B2 (en) | 2014-07-08 | 2019-06-25 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for intelligent dimming control using TRIAC dimmers |
US10342087B2 (en) | 2014-07-08 | 2019-07-02 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for intelligent dimming control using TRIAC dimmers |
US10448469B2 (en) | 2014-07-08 | 2019-10-15 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for intelligent dimming control using TRIAC dimmers |
US20160014865A1 (en) | 2014-07-08 | 2016-01-14 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and Methods for Intelligent Dimming Control Using Triac Dimmers |
CN104066254A (en) | 2014-07-08 | 2014-09-24 | 昂宝电子(上海)有限公司 | System and method for achieving intelligent light modulation control through TRIAC light modulator |
US20170311409A1 (en) | 2014-07-08 | 2017-10-26 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for intelligent dimming control using triac dimmers |
US20160014861A1 (en) | 2014-07-08 | 2016-01-14 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for intelligent dimming control using triac dimmers |
US20180103520A1 (en) | 2014-07-08 | 2018-04-12 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for intelligent dimming control using triac dimmers |
US20170196063A1 (en) | 2014-07-08 | 2017-07-06 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for intelligent dimming control using triac dimmers |
US10687397B2 (en) | 2014-07-08 | 2020-06-16 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for intelligent dimming control using TRIAC dimmers |
US20190327810A1 (en) | 2014-07-08 | 2019-10-24 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for intelligent dimming control using triac dimmers |
US9883562B2 (en) | 2014-07-08 | 2018-01-30 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for intelligent dimming control using TRIAC dimmers |
US9750107B2 (en) | 2014-07-08 | 2017-08-29 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for intelligent dimming control using TIRAC dimmers |
US20170359880A1 (en) | 2014-07-08 | 2017-12-14 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for intelligent dimming control using triac dimmers |
US20170251532A1 (en) | 2014-09-15 | 2017-08-31 | Dialog Semiconductor Inc. | Multi-mode control for solid state lighting |
CN105423140A (en) | 2014-09-15 | 2016-03-23 | 戴乐格半导体公司 | Dynamic Bleeder Current Control for LED Dimmers |
US20160113077A1 (en) | 2014-10-10 | 2016-04-21 | Citizen Holdings Co., Ltd. | Led drive circuit |
CN105591553A (en) | 2014-11-07 | 2016-05-18 | 电力集成公司 | Power Converter Controller With Analog Controlled Variable Current Circuit |
US20160134187A1 (en) | 2014-11-07 | 2016-05-12 | Power Integrations, Inc. | Power converter controller with analog controlled variable current circuit |
US9572224B2 (en) | 2014-11-07 | 2017-02-14 | Power Integrations, Inc. | Bleeder protection using thermal foldback |
CN104619077A (en) | 2014-12-18 | 2015-05-13 | 无锡市芯茂微电子有限公司 | LED (Light Emitting Diode) constant current control circuit and control method thereof |
US9332609B1 (en) | 2015-01-08 | 2016-05-03 | Illum Technology, Llc | Phase cut dimming LED driver |
CN105992440A (en) | 2015-01-28 | 2016-10-05 | 立锜科技股份有限公司 | Control circuit and method of LED driver |
US9781786B2 (en) | 2015-01-28 | 2017-10-03 | Richtek Technology Corp. | Control circuit and method of a LED driver |
US9820344B1 (en) | 2015-02-09 | 2017-11-14 | Elias S Papanicolaou | Led thyristor switched constant current driver |
TW201630468A (en) | 2015-02-12 | 2016-08-16 | Richtek Technology Corp | Linear LED driver and control method thereof |
US9661702B2 (en) | 2015-03-05 | 2017-05-23 | Microchip Technology Inc. | Constant-current controller with square-wave input current shaping |
US10054271B2 (en) | 2015-03-10 | 2018-08-21 | Jiaxing Super Lighting Electric Appliance Co., Ltd. | LED tube lamp |
US20160277411A1 (en) | 2015-03-19 | 2016-09-22 | Microsoft Technology Licensing, Llc. | Tenant lockbox |
US10299328B2 (en) | 2015-03-26 | 2019-05-21 | Signify Holding B.V. | LED driver circuit, lighting arrangement and driving method |
TW201639415A (en) | 2015-04-30 | 2016-11-01 | 立錡科技股份有限公司 | Light emitting device driver circuit and control circuit and control method thereof |
US20160323957A1 (en) | 2015-05-01 | 2016-11-03 | Cree, Inc. | Controlling the drive signal in a lighting fixture based on ambient temperature |
US10616975B2 (en) | 2015-06-08 | 2020-04-07 | Panasonic Intellectual Property Management Co., Ltd. | Dimmer |
CN104902653A (en) | 2015-06-24 | 2015-09-09 | 赛尔富电子有限公司 | LED constant-voltage dimming power supply and LED lamp dimming system |
CN106332390A (en) | 2015-06-30 | 2017-01-11 | 华润矽威科技(上海)有限公司 | Non-isolated LED constant-current driver chip, circuit and method |
US20170006684A1 (en) | 2015-07-02 | 2017-01-05 | Delta Electronics, Inc. | Led lighting module having tunable correlated color temperature and control method thereof |
CN105072742A (en) | 2015-07-22 | 2015-11-18 | 佛山冠今光电科技有限公司 | High-voltage linear constant-current LED drive circuit |
US20170055323A1 (en) | 2015-08-21 | 2017-02-23 | Seoul Semiconductor Co., Ltd. | Driving circuit and lighting apparatus for light emitting diode |
CN105246218A (en) | 2015-11-09 | 2016-01-13 | 生迪智慧科技有限公司 | Dimming control circuit, dimming control method and lighting equipment |
US9655188B1 (en) | 2016-02-03 | 2017-05-16 | Ketra, Inc. | Illumination device and method for independently controlling power delivered to a load from dimmers having dissimilar phase-cut dimming angles |
CN105873269A (en) | 2016-03-31 | 2016-08-17 | 深圳市九洲光电科技有限公司 | Intelligent light emitting diode (LED) lamp, system and method compatible with silicon-controlled rectifier dimming |
US20170354008A1 (en) | 2016-06-02 | 2017-12-07 | Fairchild Korea Semiconductor, Ltd. | Led driving device |
US10362643B2 (en) | 2016-07-07 | 2019-07-23 | Semiconductor Components Industries, Llc | LED driver circuit and LED driving method |
CN205812458U (en) | 2016-07-14 | 2016-12-14 | 深圳市明微电子股份有限公司 | A kind of LED linear constant-current drive circuit and LED light device |
US20180035507A1 (en) | 2016-07-26 | 2018-02-01 | Panasonic Intellectual Property Management Co., Ltd. | Lighting device, and luminaire |
CN106163009A (en) | 2016-08-18 | 2016-11-23 | 杰华特微电子(杭州)有限公司 | Illumination driving circuit and illuminator |
CN206042434U (en) | 2016-08-18 | 2017-03-22 | 杰华特微电子(杭州)有限公司 | Lighting drive circuit and lighting system |
US20180110104A1 (en) | 2016-10-17 | 2018-04-19 | Guangzhou On-Bright Electronics Co., Ltd. | Systems and methods for intelligent control related to triac dimmers by using modulation signals |
US9883561B1 (en) | 2016-10-17 | 2018-01-30 | Guangzhou On-Bright Electronics Co., Ltd. | Systems and methods for intelligent control related to triac dimmers by using modulation signals |
US10264642B2 (en) | 2016-10-17 | 2019-04-16 | Guangzhou On-Bright Electronics Co., Ltd. | Systems and methods for intelligent control related to TRIAC dimmers by using modulation signals |
CN106413189A (en) | 2016-10-17 | 2017-02-15 | 广州昂宝电子有限公司 | Intelligent control system and method using modulated signal and associated with TRIAC light modulator |
US20180115234A1 (en) | 2016-10-26 | 2018-04-26 | Joulwatt Technology (Hangzhou) Co., Ltd. | Bleeder circuit |
US10153684B2 (en) | 2016-10-26 | 2018-12-11 | Joulwatt Technology (Hangzhou) Co., Ltd. | Bleeder circuit |
CN106332374A (en) | 2016-10-26 | 2017-01-11 | 杰华特微电子(杭州)有限公司 | Bleeder circuit and method for controlling bleeder current and LED control circuit |
CN106358337A (en) | 2016-10-26 | 2017-01-25 | 杰华特微电子(杭州)有限公司 | Leakage circuit, leakage current control method and LED (Light Emitting Diode) control circuit |
US20180139816A1 (en) | 2016-11-16 | 2018-05-17 | Joulwatt Technology (Hangzhou) Co., Ltd. | Bleeder circuit and control method thereof, and led control circuit |
CN106793246A (en) | 2016-11-16 | 2017-05-31 | 杰华特微电子(杭州)有限公司 | Leadage circuit and its control method and LED control circuit |
CN106604460A (en) | 2016-12-12 | 2017-04-26 | 深圳市必易微电子有限公司 | Constant current circuit, constant current controller and constant current control method |
CN108337764A (en) | 2017-01-19 | 2018-07-27 | 鸿科电子实业有限公司 | Constant pressure exports AC phase Dimmable LED drivers |
CN107069726A (en) | 2017-01-24 | 2017-08-18 | 国网山东省电力公司德州市陵城区供电公司 | A kind of electric power energy-saving control system |
US20180263089A1 (en) | 2017-03-09 | 2018-09-13 | Sean Paul Seyler | Lamp control |
CN106912144A (en) | 2017-04-06 | 2017-06-30 | 矽力杰半导体技术(杭州)有限公司 | LED drive circuit, circuit module and control method with controllable silicon dimmer |
US20180310376A1 (en) * | 2017-04-21 | 2018-10-25 | Silergy Semiconductor Technology (Hangzhou) Ltd | Led driver with silicon controlled dimmer, apparatus and control method thereof |
CN106888524A (en) | 2017-04-21 | 2017-06-23 | 矽力杰半导体技术(杭州)有限公司 | LED drive circuit, circuit module and control method with controllable silicon dimmer |
CN107046751A (en) | 2017-05-27 | 2017-08-15 | 深圳市明微电子股份有限公司 | A kind of linear constant current LED drive circuit, driving chip and drive device |
TWI630842B (en) | 2017-07-10 | 2018-07-21 | 大陸商昂寶電子(上海)有限公司 | System for LED switch control |
TW201909699A (en) | 2017-07-10 | 2019-03-01 | 大陸商昂寶電子(上海)有限公司 | System for LED switch control |
US20220209762A1 (en) | 2017-07-10 | 2022-06-30 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
US20220149829A1 (en) | 2017-07-10 | 2022-05-12 | On-Bright Electronics (Shanghai) Co-Ltd. | Switch control systems for light emitting diodes and methods thereof |
US20190124736A1 (en) | 2017-07-10 | 2019-04-25 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
US20200205263A1 (en) | 2017-07-10 | 2020-06-25 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
US20220038085A1 (en) | 2017-07-10 | 2022-02-03 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
CN107645804A (en) | 2017-07-10 | 2018-01-30 | 昂宝电子(上海)有限公司 | System for LED switch control |
US11206015B2 (en) | 2017-07-10 | 2021-12-21 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
US11201612B2 (en) | 2017-07-10 | 2021-12-14 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
US20200205264A1 (en) | 2017-07-10 | 2020-06-25 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
US11183996B2 (en) | 2017-07-10 | 2021-11-23 | On-Bright Electronics (Shanghai) Co., Ltd. | Switch control systems for light emitting diodes and methods thereof |
US10973095B2 (en) | 2017-09-14 | 2021-04-06 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for bleeder control related to lighting emitting diodes |
US10512131B2 (en) | 2017-09-14 | 2019-12-17 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for bleeder control related to lighting emitting diodes |
US20190082507A1 (en) | 2017-09-14 | 2019-03-14 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for bleeder control related to lighting emitting diodes |
US20200146121A1 (en) | 2017-09-14 | 2020-05-07 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for bleeder control related to lighting emitting diodes |
US20190104583A1 (en) | 2017-09-29 | 2019-04-04 | Panasonic Intellectual Property Management Co., Ltd. | Power supply system, lighting device, and illumination system |
CN207460551U (en) | 2017-11-03 | 2018-06-05 | 杰华特微电子(杭州)有限公司 | LED light adjusting circuits |
CN207744191U (en) | 2017-11-29 | 2018-08-17 | 深圳音浮光电股份有限公司 | LED light modulating devices |
US10785837B2 (en) | 2017-11-30 | 2020-09-22 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for stage-based control related to TRIAC dimmers |
US20190166667A1 (en) | 2017-11-30 | 2019-05-30 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for stage-based control related to triac dimmers |
US20190380183A1 (en) | 2017-11-30 | 2019-12-12 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for stage-based control related to triac dimmers |
TW201927074A (en) | 2017-11-30 | 2019-07-01 | 大陸商昂寶電子(上海)有限公司 | System and method for control related to TRIAC light modulator and based on periods |
US10375785B2 (en) | 2017-11-30 | 2019-08-06 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for stage-based control related to TRIAC dimmers |
US11026304B2 (en) | 2017-11-30 | 2021-06-01 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for stage-based control related to TRIAC dimmers |
US10999903B2 (en) | 2017-11-30 | 2021-05-04 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for stage-based control related to TRIAC dimmers |
US20200305247A1 (en) | 2017-11-30 | 2020-09-24 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for stage-based control related to triac dimmers |
US20190350060A1 (en) | 2017-11-30 | 2019-11-14 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for stage-based control related to triac dimmers |
US10499467B2 (en) | 2017-12-18 | 2019-12-03 | Self Electronics Co., Ltd. | LED lamp with constant current dimming drive circuit based on PWM input |
US20190230755A1 (en) | 2017-12-28 | 2019-07-25 | On-Bright Electronics (Shanghai) Co., Ltd. | Led lighting systems with triac dimmers and methods thereof |
US20210007195A1 (en) | 2017-12-28 | 2021-01-07 | On-Bright Electronics (Shanghai) Co., Ltd. | Led lighting systems with triac dimmers and methods thereof |
US11570859B2 (en) | 2017-12-28 | 2023-01-31 | On-Bright Electronics (Shanghai) Co., Ltd. | LED lighting systems with TRIAC dimmers and methods thereof |
CN107995747A (en) | 2017-12-28 | 2018-05-04 | 矽力杰半导体技术(杭州)有限公司 | Circuit module, Dimmable LED drive circuit and control method |
US10827588B2 (en) | 2017-12-28 | 2020-11-03 | On-Bright Electronics (Shanghai) Co., Ltd. | LED lighting systems with TRIAC dimmers and methods thereof |
US20210007196A1 (en) | 2017-12-28 | 2021-01-07 | On-Bright Electronics (Shanghai) Co., Ltd. | Led lighting systems with triac dimmers and methods thereof |
CN207910676U (en) | 2017-12-30 | 2018-09-25 | 天津信天电子科技有限公司 | A kind of multichannel servo-driver with over-voltage over-current protection function |
CN107995750A (en) | 2018-01-03 | 2018-05-04 | 矽力杰半导体技术(杭州)有限公司 | Circuit module, the LED drive circuit of tunable optical and control method |
CN108366460A (en) | 2018-04-11 | 2018-08-03 | 矽力杰半导体技术(杭州)有限公司 | Leadage circuit and LED drive circuit |
US10405392B1 (en) | 2018-04-16 | 2019-09-03 | Dialog Semiconductor Inc. | Dimmer multi-fire to increase direct AC LED device efficiency |
US20190350055A1 (en) | 2018-05-08 | 2019-11-14 | Joulwatt Technology (Hangzhou) Co., Ltd. | Control circuit and control method for lighting circuit, and lighting circuit |
US20190364628A1 (en) | 2018-05-25 | 2019-11-28 | Silergy Semiconductor Technology (Hangzhou) Ltd | Led driver with silicon controlled dimmer, apparatus and control method thereof |
CN208572500U (en) | 2018-07-11 | 2019-03-01 | 深圳市明微电子股份有限公司 | Linearity constant current control circuit and LED matrix for LED light |
CN108834259A (en) | 2018-07-11 | 2018-11-16 | 深圳市明微电子股份有限公司 | For the linearity constant current control circuit of LED light, method and LED matrix |
CN109246885A (en) | 2018-09-11 | 2019-01-18 | 莱昊(上海)光电科技有限公司 | A kind of phase-cut dimming device of LED |
US10531534B1 (en) * | 2019-01-29 | 2020-01-07 | Wuxi Org Microelectronics Co., Ltd. | Switched-mode control circuit for correlated color temperature based on linear drive LED lighting |
US11224105B2 (en) | 2019-02-19 | 2022-01-11 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods with TRIAC dimmers for voltage conversion related to light emitting diodes |
US20200267817A1 (en) | 2019-02-19 | 2020-08-20 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods with triac dimmers for voltage conversion related to light emitting diodes |
US20220225483A1 (en) | 2019-02-19 | 2022-07-14 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods with triac dimmers for voltage conversion related to light emitting diodes |
CN109729621A (en) | 2019-03-04 | 2019-05-07 | 上海晶丰明源半导体股份有限公司 | Control circuit, method, chip and the drive system and method for leadage circuit |
US20200375001A1 (en) | 2019-05-21 | 2020-11-26 | Seoul Semiconductor Co., Ltd. | Led lighting apparatus and led driving circuit thereof |
CN110086362A (en) | 2019-05-29 | 2019-08-02 | 杭州涂鸦信息技术有限公司 | A kind of regulating device |
CN110099495A (en) | 2019-06-11 | 2019-08-06 | 安徽省东科半导体有限公司 | A kind of power frequency is without inductor constant-current control circuit and control method |
US10568185B1 (en) | 2019-07-18 | 2020-02-18 | Leviton Manufacturing Company, Inc. | Two-wire dimmer operation |
US11297704B2 (en) | 2019-08-06 | 2022-04-05 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for bleeder control related to TRIAC dimmers associated with LED lighting |
CN110493913A (en) | 2019-08-06 | 2019-11-22 | 昂宝电子(上海)有限公司 | The control system and method for LED illumination System for controllable silicon light modulation |
US20210045213A1 (en) | 2019-08-06 | 2021-02-11 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for bleeder control related to triac dimmers associated with led lighting |
US20220217824A1 (en) | 2019-08-06 | 2022-07-07 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for bleeder control related to triac dimmers associated with led lighting |
US20210153313A1 (en) | 2019-11-20 | 2021-05-20 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control related to triac dimmers associated with led lighting |
US11405992B2 (en) | 2019-11-20 | 2022-08-02 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control related to TRIAC dimmers associated with LED lighting |
US20220210880A1 (en) | 2019-11-20 | 2022-06-30 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for dimming control related to triac dimmers associated with led lighting |
US20210195709A1 (en) | 2019-12-19 | 2021-06-24 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for providing power supply to current controllers associated with led lighting |
US11564299B2 (en) | 2019-12-19 | 2023-01-24 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for providing power supply to current controllers associated with LED lighting |
US20220225480A1 (en) | 2019-12-27 | 2022-07-14 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for controlling currents flowing through light emitting diodes |
US11252799B2 (en) | 2019-12-27 | 2022-02-15 | On-Bright Electronics (Shanghai) Co., Ltd. | Systems and methods for controlling currents flowing through light emitting diodes |
US20210204375A1 (en) | 2019-12-27 | 2021-07-01 | On-Bright Electronics (Shanghai) Co., Ltd | Systems and methods for controlling currents flowing through light emitting diodes |
Non-Patent Citations (72)
Title |
---|
China Patent Office, Notice of Allowance dated Sep. 1, 2021, in Application No. 201911371960.8. |
China Patent Office, Office Action dated Apr. 15, 2021, in Application No. 201911371960.8. |
China Patent Office, Office Action dated Apr. 30, 2021, in Application No. 201910719931.X. |
China Patent Office, Office Action dated Aug. 28, 2015, in Application No. 201410322602.9. |
China Patent Office, Office Action dated Aug. 8, 2015, in Application No. 201410172086.6. |
China Patent Office, Office Action dated Dec. 14, 2015, in Application No. 201210166672.0. |
China Patent Office, Office Action dated Dec. 3, 2018, in Application No. 201710557179.4. |
China Patent Office, Office Action dated Feb. 1, 2021, in Application No. 201911140844.5. |
China Patent Office, Office Action dated Feb. 3, 2021, in Application No. 201911316902.5. |
China Patent Office, Office Action dated Jan. 17, 2022, in Application No. 201910124049.0. |
China Patent Office, Office Action dated Jan. 9, 2020, in Application No. 201710828263.5. |
China Patent Office, Office Action dated Jul. 7, 2014, in Application No. 201210468505.1. |
China Patent Office, Office Action dated Jun. 3, 2014, in Application No. 201110103130.4. |
China Patent Office, Office Action dated Jun. 30, 2015, in Application No. 201410171893.6. |
China Patent Office, Office Action dated Mar. 2, 2016, in Application No. 201410172086.6. |
China Patent Office, Office Action dated Mar. 22, 2016, in Application No. 201410322612.2. |
China Patent Office, Office Action dated Mar. 22, 2019, in Application No. 201711464007.9. |
China Patent Office, Office Action dated May 26, 2021, in Application No. 201910124049.0. |
China Patent Office, Office Action dated Nov. 15, 2014, in Application No. 201210166672.0. |
China Patent Office, Office Action dated Nov. 15, 2021, in Application No. 201911316902.5. |
China Patent Office, Office Action dated Nov. 2, 2020, in Application No. 201910124049.0. |
China Patent Office, Office Action dated Nov. 23, 2021, in Application No. 201911140844.5. |
China Patent Office, Office Action dated Nov. 29, 2018, in Application No. 201710828263.5. |
China Patent Office, Office Action dated Oct. 19, 2015, in Application No. 201410322612.2. |
China Patent Office, Office Action dated Sep. 2, 2016, in Application No. 201510103579.9. |
Qi et al., "Sine Wave Dimming Circuit Based on PIC16 MCU," Electronic Technology Application in 2014, vol. 10, (2014). |
Taiwan Intellectual Property Office, Office Action dated Apr. 18, 2016, in Application No. 103140989. |
Taiwan Intellectual Property Office, Office Action dated Apr. 27, 2020, in Application No. 108116002. |
Taiwan Intellectual Property Office, Office Action dated Apr. 7, 2021, in Application No. 109111042. |
Taiwan Intellectual Property Office, Office Action dated Aug. 23, 2017, in Application No. 106103535. |
Taiwan Intellectual Property Office, Office Action dated Aug. 27, 2020, in Application No. 107107508. |
Taiwan Intellectual Property Office, Office Action dated Dec. 27, 2019, in Application No. 108116002. |
Taiwan Intellectual Property Office, Office Action dated Feb. 11, 2020, in Application No. 107107508. |
Taiwan Intellectual Property Office, Office Action dated Feb. 27, 2018, in Application No. 106136242. |
Taiwan Intellectual Property Office, Office Action dated Feb. 6, 2018, in Application No. 106130686. |
Taiwan Intellectual Property Office, Office Action dated Jan. 14, 2019, in Application No. 107107508. |
Taiwan Intellectual Property Office, Office Action dated Jan. 21, 2021, in Application No. 109108798. |
Taiwan Intellectual Property Office, Office Action dated Jan. 4, 2021, in Application No. 109111042. |
Taiwan Intellectual Property Office, Office Action dated Jan. 7, 2014, in Application No. 100119272. |
Taiwan Intellectual Property Office, Office Action dated Jun. 16, 2020, in Application No. 108136083. |
Taiwan Intellectual Property Office, Office Action dated Jun. 9, 2014, in Application No. 101124982. |
Taiwan Intellectual Property Office, Office Action dated May 28, 2019, in Application No. 107112306. |
Taiwan Intellectual Property Office, Office Action dated Nov. 13, 2015, in Application No. 103141628. |
Taiwan Intellectual Property Office, Office Action dated Nov. 30, 2020, in Application No. 107107508. |
Taiwan Intellectual Property Office, Office Action dated Oct. 31, 2019, in Application No. 107107508. |
Taiwan Intellectual Property Office, Office Action dated Sep. 17, 2015, in Application No. 103127108. |
Taiwan Intellectual Property Office, Office Action dated Sep. 17, 2015, in Application No. 103127620. |
Taiwan Intellectual Property Office, Office Action dated Sep. 25, 2014, in Application No. 101148716. |
Taiwan Intellectual Property Office, Office Action dated Sep. 9, 2020, in Application No. 108148566. |
United States Patent and Trademark Office, Notice of Allowance dated Apr. 12, 2023, in U.S. Appl. No. 17/545,752. |
United States Patent and Trademark Office, Notice of Allowance dated Dec. 19, 2022, in U.S. Appl. No. 17/528,153. |
United States Patent and Trademark Office, Notice of Allowance dated Feb. 14, 2023, in U.S. Appl. No. 17/520,573. |
United States Patent and Trademark Office, Notice of Allowance dated Feb. 8, 2023, in U.S. Appl. No. 17/554,306. |
United States Patent and Trademark Office, Notice of Allowance dated Jan. 19, 2023, in U.S. Appl. No. 17/528,153. |
United States Patent and Trademark Office, Notice of Allowance dated Jun. 6, 2023, in U.S. Appl. No. 17/578,706. |
United States Patent and Trademark Office, Notice of Allowance dated May 30, 2023, in U.S. Appl. No. 17/503,238. |
United States Patent and Trademark Office, Notice of Allowance dated Nov. 2, 2022, in U.S. Appl. No. 17/023,632. |
United States Patent and Trademark Office, Notice of Allowance dated Oct. 4, 2022, in U.S. Appl. No. 17/554,306. |
United States Patent and Trademark Office, Notice of Allowance dated Sep. 12, 2022, in U.S. Appl. No. 17/023,632. |
United States Patent and Trademark Office, Office Action dated Apr. 26, 2022, in U.S. Appl. No. 17/023,632. |
United States Patent and Trademark Office, Office Action dated Dec. 15, 2021, in U.S. Appl. No. 17/023,632. |
United States Patent and Trademark Office, Office Action dated Feb. 3, 2023, in U.S. Appl. No. 17/503,238. |
United States Patent and Trademark Office, Office Action dated Jan. 26, 2023, in U.S. Appl. No. 17/578,706. |
United States Patent and Trademark Office, Office Action dated Jul. 15, 2022, in U.S. Appl. No. 17/528,153. |
United States Patent and Trademark Office, Office Action dated Jun. 12, 2023, in U.S. Appl. No. 18/103,971. |
United States Patent and Trademark Office, Office Action dated Mar. 22, 2023, in U.S. Appl. No. 17/502,916. |
United States Patent and Trademark Office, Office Action dated Oct. 19, 2022, in U.S. Appl. No. 17/520,573. |
United States Patent and Trademark Office, Office Action dated Oct. 5, 2022, in U.S. Appl. No. 17/502,916. |
United States Patent and Trademark Office, Office Action dated Sep. 12, 2022, in U.S. Appl. No. 17/503,238. |
United States Patent and Trademark Office, Office Action dated Sep. 14, 2022, in U.S. Appl. No. 17/545,752. |
United States Patent and Trademark Office, Office Action dated Sep. 16, 2022, in U.S. Appl. No. 17/578,706. |
United States Patent and Trademark Office, Office Action dated Sep. 19, 2023, in U.S. Appl. No. 17/502,916. |
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US20230225028A1 (en) | 2023-07-13 |
TW202126113A (en) | 2021-07-01 |
US11564299B2 (en) | 2023-01-24 |
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